31012232313 has 8 divisors (see below), whose sum is σ = 41966802208. Its totient is φ = 20366241984.

The previous prime is 31012232297. The next prime is 31012232323. The reversal of 31012232313 is 31323221013.

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

It is not a de Polignac number, because 31012232313 - 2⁴ = 31012232297 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 31012232313.

It is not an unprimeable number, because it can be changed into a prime (31012232323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77144656 + ... + 77145057.

It is an arithmetic number, because the mean of its divisors is an integer number (5245850276).

Almost surely, 2^31012232313 is an apocalyptic number.

It is an amenable number.

31012232313 is a deficient number, since it is larger than the sum of its proper divisors (10954569895).

31012232313 is a wasteful number, since it uses less digits than its factorization.

31012232313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154289783.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31012232313 its reverse (31323221013), we get a palindrome (62335453326).

The spelling of 31012232313 in words is "thirty-one billion, twelve million, two hundred thirty-two thousand, three hundred thirteen".