23431401040 has 40 divisors (see below), whose sum is σ = 54492215400. Its totient is φ = 9370116096.

The previous prime is 23431401017. The next prime is 23431401047. The reversal of 23431401040 is 4010413432.

It can be written as a sum of positive squares in 4 ways, for example, as 149523984 + 23281877056 = 12228^2 + 152584^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23431401047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287752 + ... + 360088.

It is an arithmetic number, because the mean of its divisors is an integer number (1362305385).

Almost surely, 2^23431401040 is an apocalyptic number.

23431401040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23431401040 is an abundant number, since it is smaller than the sum of its proper divisors (31060814360).

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

23431401040 is a wasteful number, since it uses less digits than its factorization.

23431401040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76399 (or 76393 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 23431401040 its reverse (4010413432), we get a palindrome (27441814472).

The spelling of 23431401040 in words is "twenty-three billion, four hundred thirty-one million, four hundred one thousand, forty".