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31031032301 = 130323815067
BaseRepresentation
bin11100111001100101…
…111111100111101101
32222002121100202210122
4130321211333213231
51002022421013201
622131102414325
72145656264633
oct347145774755
988077322718
1031031032301
1112184232945
1260202913a5
132c06b79099
141705353353
15c193d9e1b
hex73997f9ed

31031032301 has 4 divisors (see below), whose sum is σ = 31054848672. Its totient is φ = 31007215932.

The previous prime is 31031032261. The next prime is 31031032321. The reversal of 31031032301 is 10323013013.

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 31031032301 - 230 = 29957290477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31031032301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31031032321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11906231 + ... + 11908836.

It is an arithmetic number, because the mean of its divisors is an integer number (7763712168).

Almost surely, 231031032301 is an apocalyptic number.

It is an amenable number.

31031032301 is a deficient number, since it is larger than the sum of its proper divisors (23816371).

31031032301 is a wasteful number, since it uses less digits than its factorization.

31031032301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23816370.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 31031032301 its reverse (10323013013), we get a palindrome (41354045314).

The spelling of 31031032301 in words is "thirty-one billion, thirty-one million, thirty-two thousand, three hundred one".

Divisors: 1 1303 23815067 31031032301