10131311240 has 32 divisors (see below), whose sum is σ = 23581503000. Its totient is φ = 3912781824.

The previous prime is 10131311219. The next prime is 10131311243. The reversal of 10131311240 is 4211313101.

It can be written as a sum of positive squares in 4 ways, for example, as 4817192836 + 5314118404 = 69406^2 + 72898^2 .

It is not an unprimeable number, because it can be changed into a prime (10131311243) 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, 4365785 + ... + 4368104.

Almost surely, 2^10131311240 is an apocalyptic number.

10131311240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10131311240 is an abundant number, since it is smaller than the sum of its proper divisors (13450191760).

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

10131311240 is a wasteful number, since it uses less digits than its factorization.

10131311240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8733929 (or 8733925 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 10131311240 its reverse (4211313101), we get a palindrome (14342624341).

The spelling of 10131311240 in words is "ten billion, one hundred thirty-one million, three hundred eleven thousand, two hundred forty".