31240233043013 has 8 divisors (see below), whose sum is σ = 31303990464768. Its totient is φ = 31176482168304.

The previous prime is 31240233043009. The next prime is 31240233043021. The reversal of 31240233043013 is 31034033204213.

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 31240233043013 - 2² = 31240233043009 is a prime.

It is a super-2 number, since 2×31240233043013² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31240233043813) 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, 7973795 + ... + 11227727.

It is an arithmetic number, because the mean of its divisors is an integer number (3912998808096).

Almost surely, 2^{31240233043013} is an apocalyptic number.

It is an amenable number.

31240233043013 is a deficient number, since it is larger than the sum of its proper divisors (63757421755).

31240233043013 is a wasteful number, since it uses less digits than its factorization.

31240233043013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3273523.

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

Adding to 31240233043013 its reverse (31034033204213), we get a palindrome (62274266247226).

The spelling of 31240233043013 in words is "thirty-one trillion, two hundred forty billion, two hundred thirty-three million, forty-three thousand, thirteen".