31400421422536 has 16 divisors (see below), whose sum is σ = 59585137038000. Its totient is φ = 15511051545744.

The previous prime is 31400421422519. The next prime is 31400421422537. The reversal of 31400421422536 is 63522412400413.

It is a junction number, because it is equal to n+sod(n) for n = 31400421422495 and 31400421422504.

It is not an unprimeable number, because it can be changed into a prime (31400421422537) 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, 23644894986 + ... + 23644896313.

It is an arithmetic number, because the mean of its divisors is an integer number (3724071064875).

Almost surely, 2^{31400421422536} is an apocalyptic number.

It is an amenable number.

31400421422536 is a deficient number, since it is larger than the sum of its proper divisors (28184715615464).

31400421422536 is a wasteful number, since it uses less digits than its factorization.

31400421422536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47289791388 (or 47289791384 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 31400421422536 its reverse (63522412400413), we get a palindrome (94922833822949).

The spelling of 31400421422536 in words is "thirty-one trillion, four hundred billion, four hundred twenty-one million, four hundred twenty-two thousand, five hundred thirty-six".