31555401201553 has 8 divisors (see below), whose sum is σ = 32622126588128. Its totient is φ = 30503806671744.

The previous prime is 31555401201539. The next prime is 31555401201613. The reversal of 31555401201553 is 35510210455513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31555401201553 - 2⁹ = 31555401201041 is a prime.

It is a super-2 number, since 2×31555401201553² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31555401201523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3782709951 + ... + 3782718292.

It is an arithmetic number, because the mean of its divisors is an integer number (4077765823516).

Almost surely, 2^{31555401201553} is an apocalyptic number.

It is an amenable number.

31555401201553 is a deficient number, since it is larger than the sum of its proper divisors (1066725386575).

31555401201553 is an equidigital number, since it uses as much as digits as its factorization.

31555401201553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7565428383.

The product of its (nonzero) digits is 225000, while the sum is 40.

The spelling of 31555401201553 in words is "thirty-one trillion, five hundred fifty-five billion, four hundred one million, two hundred one thousand, five hundred fifty-three".