31377222068206 has 48 divisors (see below), whose sum is σ = 55061692987392. Its totient is φ = 13134070026000.

The previous prime is 31377222068177. The next prime is 31377222068209. The reversal of 31377222068206 is 60286022277313.

It is a super-2 number, since 2×31377222068206² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31377222068206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31377222068209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10001731 + ... + 12758881.

It is an arithmetic number, because the mean of its divisors is an integer number (1147118603904).

Almost surely, 2^{31377222068206} is an apocalyptic number.

31377222068206 is a deficient number, since it is larger than the sum of its proper divisors (23684470919186).

31377222068206 is a wasteful number, since it uses less digits than its factorization.

31377222068206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757445 (or 2757338 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 49.

The spelling of 31377222068206 in words is "thirty-one trillion, three hundred seventy-seven billion, two hundred twenty-two million, sixty-eight thousand, two hundred six".