131455341004402 has 16 divisors (see below), whose sum is σ = 208783042405560. Its totient is φ = 61861031692288.

The previous prime is 131455341004333. The next prime is 131455341004411. The reversal of 131455341004402 is 204400143554131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 82120043364121 + 49335297640281 = 9062011^2 + 7023909^2 .

It is a super-2 number, since 2×131455341004402² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2471527 + ... + 16401802.

Almost surely, 2^{131455341004402} is an apocalyptic number.

131455341004402 is a deficient number, since it is larger than the sum of its proper divisors (77327701401158).

131455341004402 is a wasteful number, since it uses less digits than its factorization.

131455341004402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19078205.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 131455341004402 its reverse (204400143554131), we get a palindrome (335855484558533).

The spelling of 131455341004402 in words is "one hundred thirty-one trillion, four hundred fifty-five billion, three hundred forty-one million, four thousand, four hundred two".