31448460961 has 4 divisors (see below), whose sum is σ = 31490788032. Its totient is φ = 31406133892.

The previous prime is 31448460937. The next prime is 31448460991. The reversal of 31448460961 is 16906484413.

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 31448460961 - 2¹⁹ = 31447936673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31448460931) 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 3 ways as a sum of consecutive naturals, for example, 21162421 + ... + 21163906.

It is an arithmetic number, because the mean of its divisors is an integer number (7872697008).

Almost surely, 2^31448460961 is an apocalyptic number.

It is an amenable number.

31448460961 is a deficient number, since it is larger than the sum of its proper divisors (42327071).

31448460961 is an equidigital number, since it uses as much as digits as its factorization.

31448460961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42327070.

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 31448460961 in words is "thirty-one billion, four hundred forty-eight million, four hundred sixty thousand, nine hundred sixty-one".