31021143324 has 24 divisors (see below), whose sum is σ = 72389856000. Its totient is φ = 10339354224.

The previous prime is 31021143253. The next prime is 31021143341. The reversal of 31021143324 is 42334112013.

It is a happy number.

It is a super-2 number, since 2×31021143324² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31021143294 and 31021143303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2877 + ... + 249099.

It is an arithmetic number, because the mean of its divisors is an integer number (3016244000).

Almost surely, 2^31021143324 is an apocalyptic number.

It is an amenable number.

31021143324 is an abundant number, since it is smaller than the sum of its proper divisors (41368712676).

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

31021143324 is a wasteful number, since it uses less digits than its factorization.

31021143324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256729 (or 256727 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31021143324 its reverse (42334112013), we get a palindrome (73355255337).

It can be divided in two parts, 31021 and 143324, that added together give a triangular number (174345 = T₅₉₀).

The spelling of 31021143324 in words is "thirty-one billion, twenty-one million, one hundred forty-three thousand, three hundred twenty-four".