1231122315 has 32 divisors (see below), whose sum is σ = 1996176960. Its totient is φ = 647837696.

The previous prime is 1231122307. The next prime is 1231122331. The reversal of 1231122315 is 5132211321.

It is a cyclic number.

It is not a de Polignac number, because 1231122315 - 2³ = 1231122307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1231122291 and 1231122300.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1031359 + ... + 1032551.

It is an arithmetic number, because the mean of its divisors is an integer number (62380530).

Almost surely, 2^1231122315 is an apocalyptic number.

1231122315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1231122315 is a deficient number, since it is larger than the sum of its proper divisors (765054645).

1231122315 is a wasteful number, since it uses less digits than its factorization.

1231122315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063.

The product of its digits is 360, while the sum is 21.

The square root of 1231122315 is about 35087.3526359570. The cubic root of 1231122315 is about 1071.7670499224.

Adding to 1231122315 its reverse (5132211321), we get a palindrome (6363333636).

The spelling of 1231122315 in words is "one billion, two hundred thirty-one million, one hundred twenty-two thousand, three hundred fifteen".