1240952831 has 2 divisors, whose sum is σ = 1240952832. Its totient is φ = 1240952830.

The previous prime is 1240952819. The next prime is 1240952861. The reversal of 1240952831 is 1382590421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1240952831 - 2⁶ = 1240952767 is a prime.

It is a super-2 number, since 2×1240952831² = 3079927857533829122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1240952791 and 1240952800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240952861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620476415 + 620476416.

It is an arithmetic number, because the mean of its divisors is an integer number (620476416).

Almost surely, 2^1240952831 is an apocalyptic number.

1240952831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240952831 is an equidigital number, since it uses as much as digits as its factorization.

1240952831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 1240952831 is about 35227.1604163606. The cubic root of 1240952831 is about 1074.6121784028.

The spelling of 1240952831 in words is "one billion, two hundred forty million, nine hundred fifty-two thousand, eight hundred thirty-one".