31222114040 has 256 divisors, whose sum is σ = 82368921600. Its totient is φ = 10550974464.

The previous prime is 31222114013. The next prime is 31222114051. The reversal of 31222114040 is 4041122213.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 81519689 + ... + 81520071.

It is an arithmetic number, because the mean of its divisors is an integer number (321753600).

Almost surely, 2^31222114040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31222114040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41184460800).

31222114040 is an abundant number, since it is smaller than the sum of its proper divisors (51146807560).

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

31222114040 is a wasteful number, since it uses less digits than its factorization.

31222114040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 31222114040 its reverse (4041122213), we get a palindrome (35263236253).

The spelling of 31222114040 in words is "thirty-one billion, two hundred twenty-two million, one hundred fourteen thousand, forty".