131403511500 has 96 divisors (see below), whose sum is σ = 384651251712. Its totient is φ = 34857400000.

The previous prime is 131403511489. The next prime is 131403511511. The reversal of 131403511500 is 5115304131.

It is an interprime number because it is at equal distance from previous prime (131403511489) and next prime (131403511511).

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, 57175 + ... + 515825.

It is an arithmetic number, because the mean of its divisors is an integer number (4006783872).

Almost surely, 2^131403511500 is an apocalyptic number.

131403511500 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 131403511500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192325625856).

131403511500 is an abundant number, since it is smaller than the sum of its proper divisors (253247740212).

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

131403511500 is a wasteful number, since it uses less digits than its factorization.

131403511500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458864 (or 458852 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 131403511500 its reverse (5115304131), we get a palindrome (136518815631).

The spelling of 131403511500 in words is "one hundred thirty-one billion, four hundred three million, five hundred eleven thousand, five hundred".