11531013510 has 16 divisors (see below), whose sum is σ = 27674432496. Its totient is φ = 3074936928.

The previous prime is 11531013509. The next prime is 11531013523. The reversal of 11531013510 is 1531013511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192183529 + ... + 192183588.

It is an arithmetic number, because the mean of its divisors is an integer number (1729652031).

Almost surely, 2^11531013510 is an apocalyptic number.

11531013510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11531013510 is an abundant number, since it is smaller than the sum of its proper divisors (16143418986).

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

11531013510 is a wasteful number, since it uses less digits than its factorization.

11531013510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384367127.

The product of its (nonzero) digits is 225, while the sum is 21.

Subtracting from 11531013510 its reverse (1531013511), we obtain a palindrome (9999999999).

The spelling of 11531013510 in words is "eleven billion, five hundred thirty-one million, thirteen thousand, five hundred ten".