731351470961 has 4 divisors (see below), whose sum is σ = 731367740532. Its totient is φ = 731335201392.

The previous prime is 731351470957. The next prime is 731351470991. The reversal of 731351470961 is 169074153137.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 404853510961 + 326497960000 = 636281^2 + 571400^2 .

It is a cyclic number.

It is not a de Polignac number, because 731351470961 - 2² = 731351470957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (731351470991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8067170 + ... + 8157323.

It is an arithmetic number, because the mean of its divisors is an integer number (182841935133).

Almost surely, 2^731351470961 is an apocalyptic number.

It is an amenable number.

731351470961 is a deficient number, since it is larger than the sum of its proper divisors (16269571).

731351470961 is a wasteful number, since it uses less digits than its factorization.

731351470961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16269570.

The product of its (nonzero) digits is 476280, while the sum is 47.

The spelling of 731351470961 in words is "seven hundred thirty-one billion, three hundred fifty-one million, four hundred seventy thousand, nine hundred sixty-one".