231541464 has 128 divisors (see below), whose sum is σ = 736704000. Its totient is φ = 60117120.

The previous prime is 231541459. The next prime is 231541493. The reversal of 231541464 is 464145132.

231541464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231541464² = 107222899102526592, which contains 22 as substring.

It is a congruent number.

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, 89274 + ... + 91830.

It is an arithmetic number, because the mean of its divisors is an integer number (5755500).

Almost surely, 2^231541464 is an apocalyptic number.

231541464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231541464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368352000).

231541464 is an abundant number, since it is smaller than the sum of its proper divisors (505162536).

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

231541464 is a wasteful number, since it uses less digits than its factorization.

231541464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2598 (or 2580 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 231541464 is about 15216.4865852798. The cubic root of 231541464 is about 614.0582797902.

Adding to 231541464 its reverse (464145132), we get a palindrome (695686596).

The spelling of 231541464 in words is "two hundred thirty-one million, five hundred forty-one thousand, four hundred sixty-four".