31011310242431 has 8 divisors (see below), whose sum is σ = 32835590991360. Its totient is φ = 29187039052288.

The previous prime is 31011310242373. The next prime is 31011310242439. The reversal of 31011310242431 is 13424201311013.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31011310242431 is a prime.

It is a super-2 number, since 2×31011310242431² (a number of 28 digits) contains 22 as substring.

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 31011310242431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31011310242439) 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, 4930370 + ... + 9291456.

It is an arithmetic number, because the mean of its divisors is an integer number (4104448873920).

Almost surely, 2^{31011310242431} is an apocalyptic number.

31011310242431 is a deficient number, since it is larger than the sum of its proper divisors (1824280748929).

31011310242431 is a wasteful number, since it uses less digits than its factorization.

31011310242431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4779393.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 31011310242431 its reverse (13424201311013), we get a palindrome (44435511553444).

The spelling of 31011310242431 in words is "thirty-one trillion, eleven billion, three hundred ten million, two hundred forty-two thousand, four hundred thirty-one".