31123000465 has 8 divisors (see below), whose sum is σ = 37905027840. Its totient is φ = 24526782192.

The previous prime is 31123000463. The next prime is 31123000481. The reversal of 31123000465 is 56400032113.

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

It is not a de Polignac number, because 31123000465 - 2¹ = 31123000463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31123000463) 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, 46451905 + ... + 46452574.

It is an arithmetic number, because the mean of its divisors is an integer number (4738128480).

Almost surely, 2^31123000465 is an apocalyptic number.

It is an amenable number.

31123000465 is a deficient number, since it is larger than the sum of its proper divisors (6782027375).

31123000465 is an equidigital number, since it uses as much as digits as its factorization.

31123000465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92904551.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 31123000465 its reverse (56400032113), we get a palindrome (87523032578).

The spelling of 31123000465 in words is "thirty-one billion, one hundred twenty-three million, four hundred sixty-five", and thus it is an aban number.