31401855541 has 32 divisors (see below), whose sum is σ = 41737973760. Its totient is φ = 22955809536.

The previous prime is 31401855517. The next prime is 31401855571. The reversal of 31401855541 is 14555810413.

It is a cyclic number.

It is not a de Polignac number, because 31401855541 - 2⁵ = 31401855509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31401855541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31401855571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 249921 + ... + 353926.

It is an arithmetic number, because the mean of its divisors is an integer number (1304311680).

Almost surely, 2^31401855541 is an apocalyptic number.

It is an amenable number.

31401855541 is a deficient number, since it is larger than the sum of its proper divisors (10336118219).

31401855541 is a wasteful number, since it uses less digits than its factorization.

31401855541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603913.

The product of its (nonzero) digits is 48000, while the sum is 37.

The spelling of 31401855541 in words is "thirty-one billion, four hundred one million, eight hundred fifty-five thousand, five hundred forty-one".