231420345 has 32 divisors (see below), whose sum is σ = 404729472. Its totient is φ = 112223232.

The previous prime is 231420253. The next prime is 231420401. The reversal of 231420345 is 543024132.

It is not a de Polignac number, because 231420345 - 2¹⁴ = 231403961 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4209 + ... + 21921.

It is an arithmetic number, because the mean of its divisors is an integer number (12647796).

Almost surely, 2^231420345 is an apocalyptic number.

It is an amenable number.

231420345 is a deficient number, since it is larger than the sum of its proper divisors (173309127).

231420345 is a wasteful number, since it uses less digits than its factorization.

231420345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17801.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 231420345 is about 15212.5062037785. The cubic root of 231420345 is about 613.9511901203.

Adding to 231420345 its reverse (543024132), we get a palindrome (774444477).

The spelling of 231420345 in words is "two hundred thirty-one million, four hundred twenty thousand, three hundred forty-five".