131510440450 has 12 divisors (see below), whose sum is σ = 244609419330. Its totient is φ = 52604176160.

The previous prime is 131510440447. The next prime is 131510440483. The reversal of 131510440450 is 54044015131.

It can be written as a sum of positive squares in 3 ways, for example, as 88921450809 + 42588989641 = 298197^2 + 206371^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1315104355 + ... + 1315104454.

Almost surely, 2^131510440450 is an apocalyptic number.

131510440450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131510440450 is a deficient number, since it is larger than the sum of its proper divisors (113098978880).

131510440450 is a wasteful number, since it uses less digits than its factorization.

131510440450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630208821 (or 2630208816 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 131510440450 its reverse (54044015131), we get a palindrome (185554455581).

The spelling of 131510440450 in words is "one hundred thirty-one billion, five hundred ten million, four hundred forty thousand, four hundred fifty".