31263346161121 has 8 divisors (see below), whose sum is σ = 32341457266920. Its totient is φ = 30185239367808.

The previous prime is 31263346161097. The next prime is 31263346161133. The reversal of 31263346161121 is 12116164336213.

It can be written as a sum of positive squares in 4 ways, for example, as 549138799521 + 30714207361600 = 741039^2 + 5542040^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31263346161121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31263346162121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22162495 + ... + 23530891.

It is an arithmetic number, because the mean of its divisors is an integer number (4042682158365).

Almost surely, 2^{31263346161121} is an apocalyptic number.

It is an amenable number.

31263346161121 is a deficient number, since it is larger than the sum of its proper divisors (1078111105799).

31263346161121 is a wasteful number, since it uses less digits than its factorization.

31263346161121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156243.

The product of its digits is 93312, while the sum is 40.

The spelling of 31263346161121 in words is "thirty-one trillion, two hundred sixty-three billion, three hundred forty-six million, one hundred sixty-one thousand, one hundred twenty-one".