23281309464 has 64 divisors (see below), whose sum is σ = 70430860800. Its totient is φ = 6260519424.

The previous prime is 23281309409. The next prime is 23281309487. The reversal of 23281309464 is 46490318232.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4073004 + ... + 4078715.

It is an arithmetic number, because the mean of its divisors is an integer number (1100482200).

Almost surely, 2^23281309464 is an apocalyptic number.

23281309464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

23281309464 is an abundant number, since it is smaller than the sum of its proper divisors (47149551336).

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

23281309464 is a wasteful number, since it uses less digits than its factorization.

23281309464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8151752 (or 8151748 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 23281309464 in words is "twenty-three billion, two hundred eighty-one million, three hundred nine thousand, four hundred sixty-four".