31125541001 has 4 divisors (see below), whose sum is σ = 31126521552. Its totient is φ = 31124560452.

The previous prime is 31125540967. The next prime is 31125541033. The reversal of 31125541001 is 10014552113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31125541001 - 2⁶ = 31125540937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31125541081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441011 + ... + 506696.

It is an arithmetic number, because the mean of its divisors is an integer number (7781630388).

Almost surely, 2^31125541001 is an apocalyptic number.

It is an amenable number.

31125541001 is a deficient number, since it is larger than the sum of its proper divisors (980551).

31125541001 is an equidigital number, since it uses as much as digits as its factorization.

31125541001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980550.

The product of its (nonzero) digits is 600, while the sum is 23.

The spelling of 31125541001 in words is "thirty-one billion, one hundred twenty-five million, five hundred forty-one thousand, one".