31461093551 has 16 divisors (see below), whose sum is σ = 33367434240. Its totient is φ = 29580629760.

The previous prime is 31461093529. The next prime is 31461093557. The reversal of 31461093551 is 15539016413.

It is a cyclic number.

It is not a de Polignac number, because 31461093551 - 2⁶ = 31461093487 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31461093557) 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 15 ways as a sum of consecutive naturals, for example, 1391231 + ... + 1413663.

It is an arithmetic number, because the mean of its divisors is an integer number (2085464640).

Almost surely, 2^31461093551 is an apocalyptic number.

31461093551 is a deficient number, since it is larger than the sum of its proper divisors (1906340689).

31461093551 is a wasteful number, since it uses less digits than its factorization.

31461093551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23006.

The product of its (nonzero) digits is 48600, while the sum is 38.

The spelling of 31461093551 in words is "thirty-one billion, four hundred sixty-one million, ninety-three thousand, five hundred fifty-one".