131131451354 has 4 divisors (see below), whose sum is σ = 196697177034. Its totient is φ = 65565725676.

The previous prime is 131131451299. The next prime is 131131451357. The reversal of 131131451354 is 453154131131.

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., 128303658025 + 2827793329 = 358195^2 + 53177^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 131131451354.

It is not an unprimeable number, because it can be changed into a prime (131131451357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32782862837 + ... + 32782862840.

Almost surely, 2^131131451354 is an apocalyptic number.

131131451354 is a deficient number, since it is larger than the sum of its proper divisors (65565725680).

131131451354 is an equidigital number, since it uses as much as digits as its factorization.

131131451354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65565725679.

The product of its digits is 10800, while the sum is 32.

Adding to 131131451354 its reverse (453154131131), we get a palindrome (584285582485).

The spelling of 131131451354 in words is "one hundred thirty-one billion, one hundred thirty-one million, four hundred fifty-one thousand, three hundred fifty-four".