331158740 has 96 divisors (see below), whose sum is σ = 797368320. Its totient is φ = 114422400.

The previous prime is 331158739. The next prime is 331158749. The reversal of 331158740 is 47851133.

It is a super-2 number, since 2×331158740² = 219332222156775200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331158697 and 331158706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331158749) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 401969 + ... + 402791.

It is an arithmetic number, because the mean of its divisors is an integer number (8305920).

Almost surely, 2^331158740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331158740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (398684160).

331158740 is an abundant number, since it is smaller than the sum of its proper divisors (466209580).

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

331158740 is a wasteful number, since it uses less digits than its factorization.

331158740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933 (or 931 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 331158740 is about 18197.7674454863. The cubic root of 331158740 is about 691.8502048047.

The spelling of 331158740 in words is "three hundred thirty-one million, one hundred fifty-eight thousand, seven hundred forty".