31322311131000 has 128 divisors (see below), whose sum is σ = 97780253313600. Its totient is φ = 8347945996800.

The previous prime is 31322311130989. The next prime is 31322311131047. The reversal of 31322311131000 is 13111322313.

It is a happy number.

It is a super-2 number, since 2×31322311131000² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2448954 + ... + 8285046.

Almost surely, 2^{31322311131000} is an apocalyptic number.

31322311131000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31322311131000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48890126656800).

31322311131000 is an abundant number, since it is smaller than the sum of its proper divisors (66457942182600).

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

31322311131000 is a wasteful number, since it uses less digits than its factorization.

31322311131000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5837906 (or 5837892 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31322311131000 its reverse (13111322313), we get a palindrome (31335422453313).

The spelling of 31322311131000 in words is "thirty-one trillion, three hundred twenty-two billion, three hundred eleven million, one hundred thirty-one thousand".