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31401303001 = 31583994247
BaseRepresentation
bin11101001111101010…
…011101101111011001
310000001102002110201021
4131033222131233121
51003302213144001
622231530522441
72161103446225
oct351752355731
9100042073637
1031401303001
1112354242792
126104296421
132c657ab983
14173c5b9785
15c3bb79ba1
hex74fa9dbd9

31401303001 has 4 divisors (see below), whose sum is σ = 31402328832. Its totient is φ = 31400277172.

The previous prime is 31401302953. The next prime is 31401303019. The reversal of 31401303001 is 10030310413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31401303001 - 223 = 31392914393 is a prime.

It is a super-2 number, since 2×314013030012 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31401303061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 465541 + ... + 528706.

It is an arithmetic number, because the mean of its divisors is an integer number (7850582208).

Almost surely, 231401303001 is an apocalyptic number.

It is an amenable number.

31401303001 is a deficient number, since it is larger than the sum of its proper divisors (1025831).

31401303001 is an equidigital number, since it uses as much as digits as its factorization.

31401303001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025830.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31401303001 its reverse (10030310413), we get a palindrome (41431613414).

The spelling of 31401303001 in words is "thirty-one billion, four hundred one million, three hundred three thousand, one".

Divisors: 1 31583 994247 31401303001