131045400131522 has 4 divisors (see below), whose sum is σ = 196568100197286. Its totient is φ = 65522700065760.

The previous prime is 131045400131489. The next prime is 131045400131537. The reversal of 131045400131522 is 225131004540131.

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

It can be written as a sum of positive squares in only one way, i.e., 88194092751241 + 42851307380281 = 9391171^2 + 6546091^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32761350032879 + ... + 32761350032882.

Almost surely, 2^{131045400131522} is an apocalyptic number.

131045400131522 is a deficient number, since it is larger than the sum of its proper divisors (65522700065764).

131045400131522 is an equidigital number, since it uses as much as digits as its factorization.

131045400131522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65522700065763.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 131045400131522 its reverse (225131004540131), we get a palindrome (356176404671653).

The spelling of 131045400131522 in words is "one hundred thirty-one trillion, forty-five billion, four hundred million, one hundred thirty-one thousand, five hundred twenty-two".