131510314021 has 4 divisors (see below), whose sum is σ = 131557673772. Its totient is φ = 131462954272.

The previous prime is 131510314009. The next prime is 131510314069. The reversal of 131510314021 is 120413015131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11249784225 + 120260529796 = 106065^2 + 346786^2 .

It is a cyclic number.

It is not a de Polignac number, because 131510314021 - 2²³ = 131501925413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131510313983 and 131510314001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131510354021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23675710 + ... + 23681263.

It is an arithmetic number, because the mean of its divisors is an integer number (32889418443).

Almost surely, 2^131510314021 is an apocalyptic number.

It is an amenable number.

131510314021 is a deficient number, since it is larger than the sum of its proper divisors (47359751).

131510314021 is an equidigital number, since it uses as much as digits as its factorization.

131510314021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47359750.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 131510314021 its reverse (120413015131), we get a palindrome (251923329152).

The spelling of 131510314021 in words is "one hundred thirty-one billion, five hundred ten million, three hundred fourteen thousand, twenty-one".