1293213831 has 24 divisors (see below), whose sum is σ = 2160096624. Its totient is φ = 682133760.

The previous prime is 1293213811. The next prime is 1293213871. The reversal of 1293213831 is 1383123921.

It is not a de Polignac number, because 1293213831 - 2⁵ = 1293213799 is a prime.

It is a super-2 number, since 2×1293213831² = 3344804025379393122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1293213792 and 1293213801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1293213811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 336450 + ... + 340271.

It is an arithmetic number, because the mean of its divisors is an integer number (90004026).

Almost surely, 2^1293213831 is an apocalyptic number.

1293213831 is a deficient number, since it is larger than the sum of its proper divisors (866882793).

1293213831 is a wasteful number, since it uses less digits than its factorization.

1293213831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676751 (or 676744 counting only the distinct ones).

The product of its digits is 7776, while the sum is 33.

The square root of 1293213831 is about 35961.2823881463. The cubic root of 1293213831 is about 1089.4904980685.

The spelling of 1293213831 in words is "one billion, two hundred ninety-three million, two hundred thirteen thousand, eight hundred thirty-one".