31422558397 has 16 divisors (see below), whose sum is σ = 33452104000. Its totient is φ = 29431226880.

The previous prime is 31422558389. The next prime is 31422558407. The reversal of 31422558397 is 79385522413.

It is a cyclic number.

It is not a de Polignac number, because 31422558397 - 2³ = 31422558389 is a prime.

It is a super-4 number, since 4×31422558397⁴ (a number of 43 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31422558397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31422558197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1873354 + ... + 1890052.

It is an arithmetic number, because the mean of its divisors is an integer number (2090756500).

Almost surely, 2^31422558397 is an apocalyptic number.

It is an amenable number.

31422558397 is a deficient number, since it is larger than the sum of its proper divisors (2029545603).

31422558397 is a wasteful number, since it uses less digits than its factorization.

31422558397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17836.

The product of its digits is 1814400, while the sum is 49.

The spelling of 31422558397 in words is "thirty-one billion, four hundred twenty-two million, five hundred fifty-eight thousand, three hundred ninety-seven".