1241996831 has 4 divisors (see below), whose sum is σ = 1250932200. Its totient is φ = 1233061464.

The previous prime is 1241996813. The next prime is 1241996837. The reversal of 1241996831 is 1386991421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1386991421 = 4027 ⋅344423.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1241996831 is a prime.

It is a super-2 number, since 2×1241996831² = 3085112256428085122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241996837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4467476 + ... + 4467753.

It is an arithmetic number, because the mean of its divisors is an integer number (312733050).

Almost surely, 2^1241996831 is an apocalyptic number.

1241996831 is a deficient number, since it is larger than the sum of its proper divisors (8935369).

1241996831 is an equidigital number, since it uses as much as digits as its factorization.

1241996831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8935368.

The product of its digits is 93312, while the sum is 44.

The square root of 1241996831 is about 35241.9754128511. The cubic root of 1241996831 is about 1074.9134470787.

The spelling of 1241996831 in words is "one billion, two hundred forty-one million, nine hundred ninety-six thousand, eight hundred thirty-one".