145216400131 has 4 divisors (see below), whose sum is σ = 158417891064. Its totient is φ = 132014909200.

The previous prime is 145216400129. The next prime is 145216400143. The reversal of 145216400131 is 131004612541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145216400131 - 2¹ = 145216400129 is a prime.

It is a super-2 number, since 2×145216400131² (a number of 23 digits) contains 22 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 145216400131.

It is not an unprimeable number, because it can be changed into a prime (145216400171) 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, 6600745450 + ... + 6600745471.

It is an arithmetic number, because the mean of its divisors is an integer number (39604472766).

Almost surely, 2^145216400131 is an apocalyptic number.

145216400131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145216400131 is a deficient number, since it is larger than the sum of its proper divisors (13201490933).

145216400131 is a wasteful number, since it uses less digits than its factorization.

145216400131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13201490932.

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 145216400131 in words is "one hundred forty-five billion, two hundred sixteen million, four hundred thousand, one hundred thirty-one".