31071195672 has 128 divisors (see below), whose sum is σ = 89278848000. Its totient is φ = 8912039040.

The previous prime is 31071195667. The next prime is 31071195677. The reversal of 31071195672 is 27659117013.

It is an interprime number because it is at equal distance from previous prime (31071195667) and next prime (31071195677).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31071195677) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7918303 + ... + 7922225.

It is an arithmetic number, because the mean of its divisors is an integer number (697491000).

Almost surely, 2^31071195672 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 31071195672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44639424000).

31071195672 is an abundant number, since it is smaller than the sum of its proper divisors (58207652328).

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

31071195672 is a wasteful number, since it uses less digits than its factorization.

31071195672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5541 (or 5537 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 42.

The spelling of 31071195672 in words is "thirty-one billion, seventy-one million, one hundred ninety-five thousand, six hundred seventy-two".