11231513420 has 96 divisors (see below), whose sum is σ = 25376198400. Its totient is φ = 4160651264.

The previous prime is 11231513411. The next prime is 11231513483. The reversal of 11231513420 is 2431513211.

It is a super-2 number, since 2×11231513420² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7231364 + ... + 7232916.

It is an arithmetic number, because the mean of its divisors is an integer number (264335400).

Almost surely, 2^11231513420 is an apocalyptic number.

11231513420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11231513420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12688099200).

11231513420 is an abundant number, since it is smaller than the sum of its proper divisors (14144684980).

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

11231513420 is a wasteful number, since it uses less digits than its factorization.

11231513420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907 (or 1905 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The spelling of 11231513420 in words is "eleven billion, two hundred thirty-one million, five hundred thirteen thousand, four hundred twenty".