823722631413 has 48 divisors (see below), whose sum is σ = 1224684292608. Its totient is φ = 492008624800.

The previous prime is 823722631409. The next prime is 823722631439. The reversal of 823722631413 is 314136227328.

It is not a de Polignac number, because 823722631413 - 2² = 823722631409 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823722631453) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 101103406 + ... + 101111552.

It is an arithmetic number, because the mean of its divisors is an integer number (25514256096).

Almost surely, 2^823722631413 is an apocalyptic number.

It is an amenable number.

823722631413 is a deficient number, since it is larger than the sum of its proper divisors (400961661195).

823722631413 is a wasteful number, since it uses less digits than its factorization.

823722631413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12166 (or 12155 counting only the distinct ones).

The product of its digits is 290304, while the sum is 42.

The spelling of 823722631413 in words is "eight hundred twenty-three billion, seven hundred twenty-two million, six hundred thirty-one thousand, four hundred thirteen".