402136131 has 8 divisors (see below), whose sum is σ = 536734224. Its totient is φ = 267814400.

The previous prime is 402136099. The next prime is 402136157. The reversal of 402136131 is 131631204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 402136131 - 2⁵ = 402136099 is a prime.

It is a super-2 number, since 2×402136131² = 323426935711298322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 402136098 and 402136107.

It is not an unprimeable number, because it can be changed into a prime (402136171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65670 + ... + 71531.

It is an arithmetic number, because the mean of its divisors is an integer number (67091778).

Almost surely, 2^402136131 is an apocalyptic number.

402136131 is a deficient number, since it is larger than the sum of its proper divisors (134598093).

402136131 is a wasteful number, since it uses less digits than its factorization.

402136131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138181.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 402136131 is about 20053.3321669991. The cubic root of 402136131 is about 738.1155674952.

Adding to 402136131 its reverse (131631204), we get a palindrome (533767335).

The spelling of 402136131 in words is "four hundred two million, one hundred thirty-six thousand, one hundred thirty-one".