831661402 has 16 divisors (see below), whose sum is σ = 1465585632. Its totient is φ = 348948720.

The previous prime is 831661399. The next prime is 831661417. The reversal of 831661402 is 204166138.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1453668 + ... + 1454239.

It is an arithmetic number, because the mean of its divisors is an integer number (91599102).

Almost surely, 2^831661402 is an apocalyptic number.

831661402 is a deficient number, since it is larger than the sum of its proper divisors (633924230).

831661402 is a wasteful number, since it uses less digits than its factorization.

831661402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2907933.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 831661402 is about 28838.5402196436. The cubic root of 831661402 is about 940.4062684776.

The spelling of 831661402 in words is "eight hundred thirty-one million, six hundred sixty-one thousand, four hundred two".