131436028 has 12 divisors (see below), whose sum is σ = 231425320. Its totient is φ = 65314512.

The previous prime is 131436023. The next prime is 131436031. The reversal of 131436028 is 820634131.

It is a junction number, because it is equal to n+sod(n) for n = 131435987 and 131436005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131436023) 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, 100143 + ... + 101446.

Almost surely, 2^131436028 is an apocalyptic number.

It is an amenable number.

131436028 is a deficient number, since it is larger than the sum of its proper divisors (99989292).

131436028 is a wasteful number, since it uses less digits than its factorization.

131436028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201756 (or 201754 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 131436028 is about 11464.5552901105. Note that the first 3 decimals coincide. The cubic root of 131436028 is about 508.4381643393.

The spelling of 131436028 in words is "one hundred thirty-one million, four hundred thirty-six thousand, twenty-eight".