131913402166 has 32 divisors (see below), whose sum is σ = 243573341760. Its totient is φ = 52176756096.

The previous prime is 131913402163. The next prime is 131913402193. The reversal of 131913402166 is 661204319131.

It is a super-2 number, since 2×131913402166² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131913402161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1084680 + ... + 1200148.

It is an arithmetic number, because the mean of its divisors is an integer number (7611666930).

Almost surely, 2^131913402166 is an apocalyptic number.

131913402166 is a deficient number, since it is larger than the sum of its proper divisors (111659939594).

131913402166 is a wasteful number, since it uses less digits than its factorization.

131913402166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121768.

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 131913402166 in words is "one hundred thirty-one billion, nine hundred thirteen million, four hundred two thousand, one hundred sixty-six".