31234342313 has 8 divisors (see below), whose sum is σ = 31616965800. Its totient is φ = 30852956160.

The previous prime is 31234342297. The next prime is 31234342351. The reversal of 31234342313 is 31324343213.

It can be written as a sum of positive squares in 4 ways, for example, as 6686659984 + 24547682329 = 81772^2 + 156677^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31234342313 - 2⁴ = 31234342297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31234342813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258488 + ... + 359561.

It is an arithmetic number, because the mean of its divisors is an integer number (3952120725).

Almost surely, 2^31234342313 is an apocalyptic number.

It is an amenable number.

31234342313 is a deficient number, since it is larger than the sum of its proper divisors (382623487).

31234342313 is an equidigital number, since it uses as much as digits as its factorization.

31234342313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618667.

The product of its digits is 15552, while the sum is 29.

Adding to 31234342313 its reverse (31324343213), we get a palindrome (62558685526).

The spelling of 31234342313 in words is "thirty-one billion, two hundred thirty-four million, three hundred forty-two thousand, three hundred thirteen".