398131230 has 64 divisors (see below), whose sum is σ = 1112652288. Its totient is φ = 89281920.

The previous prime is 398131229. The next prime is 398131231. The reversal of 398131230 is 32131893.

It is an interprime number because it is at equal distance from previous prime (398131229) and next prime (398131231).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398131231) 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, 6756 + ... + 29015.

It is an arithmetic number, because the mean of its divisors is an integer number (17385192).

Almost surely, 2^398131230 is an apocalyptic number.

398131230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

398131230 is an abundant number, since it is smaller than the sum of its proper divisors (714521058).

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

398131230 is a wasteful number, since it uses less digits than its factorization.

398131230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35841.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 398131230 is about 19953.2260549516. The cubic root of 398131230 is about 735.6570735756.

The spelling of 398131230 in words is "three hundred ninety-eight million, one hundred thirty-one thousand, two hundred thirty".