131772018970 has 32 divisors (see below), whose sum is σ = 239536132992. Its totient is φ = 52187550912.

The previous prime is 131772018953. The next prime is 131772018979. The reversal of 131772018970 is 79810277131.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 131772018970.

It is not an unprimeable number, because it can be changed into a prime (131772018979) 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, 9059824 + ... + 9074356.

It is an arithmetic number, because the mean of its divisors is an integer number (7485504156).

Almost surely, 2^131772018970 is an apocalyptic number.

131772018970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131772018970 is a deficient number, since it is larger than the sum of its proper divisors (107764114022).

131772018970 is a wasteful number, since it uses less digits than its factorization.

131772018970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23446.

The product of its (nonzero) digits is 148176, while the sum is 46.

The spelling of 131772018970 in words is "one hundred thirty-one billion, seven hundred seventy-two million, eighteen thousand, nine hundred seventy".