31443171461 has 12 divisors (see below), whose sum is σ = 34878376260. Its totient is φ = 28316545920.

The previous prime is 31443171449. The next prime is 31443171481. The reversal of 31443171461 is 16417134413.

It can be written as a sum of positive squares in 6 ways, for example, as 7717622500 + 23725548961 = 87850^2 + 154031^2 .

It is not a de Polignac number, because 31443171461 - 2³⁰ = 30369429637 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31443171481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2262026 + ... + 2275883.

It is an arithmetic number, because the mean of its divisors is an integer number (2906531355).

Almost surely, 2^31443171461 is an apocalyptic number.

It is an amenable number.

31443171461 is a deficient number, since it is larger than the sum of its proper divisors (3435204799).

31443171461 is a wasteful number, since it uses less digits than its factorization.

31443171461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4537976 (or 4537963 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The spelling of 31443171461 in words is "thirty-one billion, four hundred forty-three million, one hundred seventy-one thousand, four hundred sixty-one".