1231421313510 has 48 divisors (see below), whose sum is σ = 3214451232720. Its totient is φ = 327070728000.

The previous prime is 1231421313469. The next prime is 1231421313511. The reversal of 1231421313510 is 153131241321.

1231421313510 is a `hidden beast` number, since 1 + 2 + 3 + 14 + 2 + 131 + 3 + 510 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231421313511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27233305 + ... + 27278484.

It is an arithmetic number, because the mean of its divisors is an integer number (66967734015).

Almost surely, 2^{1231421313510} is an apocalyptic number.

1231421313510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231421313510 is an abundant number, since it is smaller than the sum of its proper divisors (1983029919210).

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

1231421313510 is a wasteful number, since it uses less digits than its factorization.

1231421313510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54512053 (or 54512050 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 1231421313510 its reverse (153131241321), we get a palindrome (1384552554831).

The spelling of 1231421313510 in words is "one trillion, two hundred thirty-one billion, four hundred twenty-one million, three hundred thirteen thousand, five hundred ten".