31442027772 has 24 divisors (see below), whose sum is σ = 73403995392. Its totient is φ = 10475066800.

The previous prime is 31442027767. The next prime is 31442027777. The reversal of 31442027772 is 27772024413.

It is an interprime number because it is at equal distance from previous prime (31442027767) and next prime (31442027777).

It is a super-2 number, since 2×31442027772² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31442027772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31442027777) 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, 677754 + ... + 722657.

It is an arithmetic number, because the mean of its divisors is an integer number (3058499808).

Almost surely, 2^31442027772 is an apocalyptic number.

It is an amenable number.

31442027772 is an abundant number, since it is smaller than the sum of its proper divisors (41961967620).

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

31442027772 is a wasteful number, since it uses less digits than its factorization.

31442027772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402289 (or 1402287 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 39.

The spelling of 31442027772 in words is "thirty-one billion, four hundred forty-two million, twenty-seven thousand, seven hundred seventy-two".