31033231000030 has 128 divisors (see below), whose sum is σ = 67732651008000. Its totient is φ = 10000081203840.

The previous prime is 31033230999941. The next prime is 31033231000061. The reversal of 31033231000030 is 3000013233013.

It is a super-2 number, since 2×31033231000030² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 31033230999971 and 31033231000007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 637483231 + ... + 637531909.

It is an arithmetic number, because the mean of its divisors is an integer number (529161336000).

Almost surely, 2^{31033231000030} is an apocalyptic number.

31033231000030 is an abundant number, since it is smaller than the sum of its proper divisors (36699420007970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31033231000030 is a wasteful number, since it uses less digits than its factorization.

31033231000030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52502.

The product of its (nonzero) digits is 486, while the sum is 19.

Adding to 31033231000030 its reverse (3000013233013), we get a palindrome (34033244233043).

The spelling of 31033231000030 in words is "thirty-one trillion, thirty-three billion, two hundred thirty-one million, thirty", and thus it is an aban number.