231959380 has 12 divisors (see below), whose sum is σ = 487114740. Its totient is φ = 92783744.

The previous prime is 231959369. The next prime is 231959383. The reversal of 231959380 is 83959132.

It can be written as a sum of positive squares in 2 ways, for example, as 143712144 + 88247236 = 11988^2 + 9394^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231959383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5798965 + ... + 5799004.

It is an arithmetic number, because the mean of its divisors is an integer number (40592895).

Almost surely, 2^231959380 is an apocalyptic number.

231959380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231959380 is an abundant number, since it is smaller than the sum of its proper divisors (255155360).

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

231959380 is a wasteful number, since it uses less digits than its factorization.

231959380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11597978 (or 11597976 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 231959380 is about 15230.2127365313. The cubic root of 231959380 is about 614.4275016907.

The spelling of 231959380 in words is "two hundred thirty-one million, nine hundred fifty-nine thousand, three hundred eighty".