31313164441 has 8 divisors (see below), whose sum is σ = 33799755080. Its totient is φ = 28837700352.

The previous prime is 31313164429. The next prime is 31313164451. The reversal of 31313164441 is 14446131313.

It can be written as a sum of positive squares in 4 ways, for example, as 92416 + 31313072025 = 304^2 + 176955^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 31313164441 - 2⁵ = 31313164409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31313164451) 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, 2775786 + ... + 2787043.

It is an arithmetic number, because the mean of its divisors is an integer number (4224969385).

Almost surely, 2^31313164441 is an apocalyptic number.

It is an amenable number.

31313164441 is a deficient number, since it is larger than the sum of its proper divisors (2486590639).

31313164441 is a wasteful number, since it uses less digits than its factorization.

31313164441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5563275.

The product of its digits is 10368, while the sum is 31.

Adding to 31313164441 its reverse (14446131313), we get a palindrome (45759295754).

The spelling of 31313164441 in words is "thirty-one billion, three hundred thirteen million, one hundred sixty-four thousand, four hundred forty-one".