23132561140 has 36 divisors (see below), whose sum is σ = 52602630444. Its totient is φ = 8541252096.

The previous prime is 23132561131. The next prime is 23132561173. The reversal of 23132561140 is 4116523132.

It can be written as a sum of positive squares in 6 ways, for example, as 1987911396 + 21144649744 = 44586^2 + 145412^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23132561099 and 23132561108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3418597 + ... + 3425356.

It is an arithmetic number, because the mean of its divisors is an integer number (1461184179).

Almost surely, 2^23132561140 is an apocalyptic number.

23132561140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23132561140 is an abundant number, since it is smaller than the sum of its proper divisors (29470069304).

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

23132561140 is a wasteful number, since it uses less digits than its factorization.

23132561140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6843988 (or 6843973 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 23132561140 in words is "twenty-three billion, one hundred thirty-two million, five hundred sixty-one thousand, one hundred forty".