131121355154402 has 16 divisors (see below), whose sum is σ = 208124037090432. Its totient is φ = 61826970891840.

The previous prime is 131121355154401. The next prime is 131121355154437. The reversal of 131121355154402 is 204451553121131.

It is not an unprimeable number, because it can be changed into a prime (131121355154401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20073688583 + ... + 20073695114.

It is an arithmetic number, because the mean of its divisors is an integer number (13007752318152).

Almost surely, 2^{131121355154402} is an apocalyptic number.

131121355154402 is a deficient number, since it is larger than the sum of its proper divisors (77002681936030).

131121355154402 is a wasteful number, since it uses less digits than its factorization.

131121355154402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40147383793.

The product of its (nonzero) digits is 72000, while the sum is 38.

The spelling of 131121355154402 in words is "one hundred thirty-one trillion, one hundred twenty-one billion, three hundred fifty-five million, one hundred fifty-four thousand, four hundred two".