31440012233 has 8 divisors (see below), whose sum is σ = 37090521600. Its totient is φ = 26079272640.

The previous prime is 31440012229. The next prime is 31440012239. The reversal of 31440012233 is 33221004413.

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 31440012233 - 2² = 31440012229 is a prime.

It is a super-2 number, since 2×31440012233² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31440012199 and 31440012208.

It is not an unprimeable number, because it can be changed into a prime (31440012239) 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, 72442208 + ... + 72442641.

It is an arithmetic number, because the mean of its divisors is an integer number (4636315200).

Almost surely, 2^31440012233 is an apocalyptic number.

It is an amenable number.

31440012233 is a deficient number, since it is larger than the sum of its proper divisors (5650509367).

31440012233 is a wasteful number, since it uses less digits than its factorization.

31440012233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144884887.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31440012233 its reverse (33221004413), we get a palindrome (64661016646).

The spelling of 31440012233 in words is "thirty-one billion, four hundred forty million, twelve thousand, two hundred thirty-three".