331151490 has 80 divisors (see below), whose sum is σ = 893363328. Its totient is φ = 88016544.

The previous prime is 331151479. The next prime is 331151503. The reversal of 331151490 is 94151133.

It is a super-2 number, since 2×331151490² = 219322618658440200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 374589 + ... + 375471.

Almost surely, 2^331151490 is an apocalyptic number.

331151490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 331151490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446681664).

331151490 is an abundant number, since it is smaller than the sum of its proper divisors (562211838).

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

331151490 is a wasteful number, since it uses less digits than its factorization.

331151490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365 (or 1356 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 331151490 is about 18197.5682441364. The cubic root of 331151490 is about 691.8451559163.

The spelling of 331151490 in words is "three hundred thirty-one million, one hundred fifty-one thousand, four hundred ninety".