653131240 has 32 divisors (see below), whose sum is σ = 1483822080. Its totient is φ = 258714432.

The previous prime is 653131231. The next prime is 653131249. The reversal of 653131240 is 42131356.

It is an interprime number because it is at equal distance from previous prime (653131231) and next prime (653131249).

It is not an unprimeable number, because it can be changed into a prime (653131249) 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, 75144 + ... + 83383.

It is an arithmetic number, because the mean of its divisors is an integer number (46369440).

Almost surely, 2^653131240 is an apocalyptic number.

It is an amenable number.

653131240 is an abundant number, since it is smaller than the sum of its proper divisors (830690840).

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

653131240 is a wasteful number, since it uses less digits than its factorization.

653131240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158641 (or 158637 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 653131240 is about 25556.4324583851. The cubic root of 653131240 is about 867.6278533803.

Adding to 653131240 its reverse (42131356), we get a palindrome (695262596).

The spelling of 653131240 in words is "six hundred fifty-three million, one hundred thirty-one thousand, two hundred forty".