331378134 has 16 divisors (see below), whose sum is σ = 663273840. Its totient is φ = 110373120.

The previous prime is 331378129. The next prime is 331378139. The reversal of 331378134 is 431873133.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (331378129) and next prime (331378139).

It is a super-2 number, since 2×331378134² = 219622935386643912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331378095 and 331378104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331378139) 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, 12979 + ... + 28830.

It is an arithmetic number, because the mean of its divisors is an integer number (41454615).

Almost surely, 2^331378134 is an apocalyptic number.

331378134 is an abundant number, since it is smaller than the sum of its proper divisors (331895706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331378134 is a wasteful number, since it uses less digits than its factorization.

331378134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43135.

The product of its digits is 18144, while the sum is 33.

The square root of 331378134 is about 18203.7944945552. The cubic root of 331378134 is about 692.0029555934.

The spelling of 331378134 in words is "three hundred thirty-one million, three hundred seventy-eight thousand, one hundred thirty-four".