402031156 has 24 divisors (see below), whose sum is σ = 716090760. Its totient is φ = 197463552.

The previous prime is 402031153. The next prime is 402031169. The reversal of 402031156 is 651130204.

It can be written as a sum of positive squares in 4 ways, for example, as 8643600 + 393387556 = 2940^2 + 19834^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402031151) 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, 52296 + ... + 59488.

It is an arithmetic number, because the mean of its divisors is an integer number (29837115).

Almost surely, 2^402031156 is an apocalyptic number.

It is an amenable number.

402031156 is a deficient number, since it is larger than the sum of its proper divisors (314059604).

402031156 is a wasteful number, since it uses less digits than its factorization.

402031156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7443 (or 7441 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 402031156 is about 20050.7146007318. The cubic root of 402031156 is about 738.0513351629.

The spelling of 402031156 in words is "four hundred two million, thirty-one thousand, one hundred fifty-six".