31475094520 has 32 divisors (see below), whose sum is σ = 71032947120. Its totient is φ = 12551996160.

The previous prime is 31475094517. The next prime is 31475094529. The reversal of 31475094520 is 2549057413.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31475094529) 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, 1175397 + ... + 1201876.

Almost surely, 2^31475094520 is an apocalyptic number.

It is an amenable number.

31475094520 is an abundant number, since it is smaller than the sum of its proper divisors (39557852600).

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

31475094520 is a wasteful number, since it uses less digits than its factorization.

31475094520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2377615 (or 2377611 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 31475094520 in words is "thirty-one billion, four hundred seventy-five million, ninety-four thousand, five hundred twenty".