97870250631 has 4 divisors (see below), whose sum is σ = 130493667512. Its totient is φ = 65246833752.

The previous prime is 97870250627. The next prime is 97870250657. The reversal of 97870250631 is 13605207879.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 97870250631 - 2² = 97870250627 is a prime.

It is a super-2 number, since 2×97870250631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97870250671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16311708436 + ... + 16311708441.

It is an arithmetic number, because the mean of its divisors is an integer number (32623416878).

Almost surely, 2^97870250631 is an apocalyptic number.

97870250631 is a deficient number, since it is larger than the sum of its proper divisors (32623416881).

97870250631 is a wasteful number, since it uses less digits than its factorization.

97870250631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32623416880.

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 97870250631 in words is "ninety-seven billion, eight hundred seventy million, two hundred fifty thousand, six hundred thirty-one".