402196831 has 4 divisors (see below), whose sum is σ = 402326064. Its totient is φ = 402067600.

The previous prime is 402196819. The next prime is 402196841. The reversal of 402196831 is 138691204.

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 402196831 - 2⁵ = 402196799 is a prime.

It is a super-2 number, since 2×402196831² = 323524581732885122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402196841) 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, 59830 + ... + 66211.

It is an arithmetic number, because the mean of its divisors is an integer number (100581516).

Almost surely, 2^402196831 is an apocalyptic number.

402196831 is a deficient number, since it is larger than the sum of its proper divisors (129233).

402196831 is a wasteful number, since it uses less digits than its factorization.

402196831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129232.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 402196831 is about 20054.8455740751. The cubic root of 402196831 is about 738.1527036434.

The spelling of 402196831 in words is "four hundred two million, one hundred ninety-six thousand, eight hundred thirty-one".