331198431 has 8 divisors (see below), whose sum is σ = 449930160. Its totient is φ = 216632832.

The previous prime is 331198409. The next prime is 331198453. The reversal of 331198431 is 134891133.

It is an interprime number because it is at equal distance from previous prime (331198409) and next prime (331198453).

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

It is not a de Polignac number, because 331198431 - 2¹⁰ = 331197407 is a prime.

It is a super-2 number, since 2×331198431² = 219384801393723522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 331198392 and 331198401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331198631) 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, 1041346 + ... + 1041663.

It is an arithmetic number, because the mean of its divisors is an integer number (56241270).

Almost surely, 2^331198431 is an apocalyptic number.

331198431 is a deficient number, since it is larger than the sum of its proper divisors (118731729).

331198431 is a wasteful number, since it uses less digits than its factorization.

331198431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2083065.

The product of its digits is 7776, while the sum is 33.

The square root of 331198431 is about 18198.8579586742. The cubic root of 331198431 is about 691.8778442478.

The spelling of 331198431 in words is "three hundred thirty-one million, one hundred ninety-eight thousand, four hundred thirty-one".