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31321000301 = 120126079101
BaseRepresentation
bin11101001010111000…
…001000100101101101
32222211210222200010012
4131022320020211231
51003121134002201
622215541423005
72156110052453
oct351270104555
988753880105
1031321000301
1112312985118
1260a140aa65
132c51c73896
141731a749d3
15c34ab65bb
hex74ae0896d

31321000301 has 4 divisors (see below), whose sum is σ = 31347080604. Its totient is φ = 31294920000.

The previous prime is 31321000289. The next prime is 31321000307. The reversal of 31321000301 is 10300012313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10300012313 = 75113715063.

It can be written as a sum of positive squares in 2 ways, for example, as 1581652900 + 29739347401 = 39770^2 + 172451^2 .

It is a cyclic number.

It is not a de Polignac number, because 31321000301 - 210 = 31320999277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31321000307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13038350 + ... + 13040751.

It is an arithmetic number, because the mean of its divisors is an integer number (7836770151).

Almost surely, 231321000301 is an apocalyptic number.

It is an amenable number.

31321000301 is a deficient number, since it is larger than the sum of its proper divisors (26080303).

31321000301 is a wasteful number, since it uses less digits than its factorization.

31321000301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26080302.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 31321000301 its reverse (10300012313), we get a palindrome (41621012614).

The spelling of 31321000301 in words is "thirty-one billion, three hundred twenty-one million, three hundred one", and thus it is an aban number.

Divisors: 1 1201 26079101 31321000301