131233402 has 8 divisors (see below), whose sum is σ = 196955136. Its totient is φ = 65581692.

The previous prime is 131233397. The next prime is 131233411. The reversal of 131233402 is 204332131.

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

It is a self number, because there is not a number n which added to its sum of digits gives 131233402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12538 + ... + 20485.

It is an arithmetic number, because the mean of its divisors is an integer number (24619392).

Almost surely, 2^131233402 is an apocalyptic number.

131233402 is a deficient number, since it is larger than the sum of its proper divisors (65721734).

131233402 is a wasteful number, since it uses less digits than its factorization.

131233402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35012.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 131233402 is about 11455.7148183778. The cubic root of 131233402 is about 508.1767550958.

Adding to 131233402 its reverse (204332131), we get a palindrome (335565533).

The spelling of 131233402 in words is "one hundred thirty-one million, two hundred thirty-three thousand, four hundred two".