1240131031 has 6 divisors (see below), whose sum is σ = 1284369632. Its totient is φ = 1197367080.

The previous prime is 1240131017. The next prime is 1240131077. The reversal of 1240131031 is 1301310421.

It is not a de Polignac number, because 1240131031 - 2⁹ = 1240130519 is a prime.

It is a super-2 number, since 2×1240131031² = 3075849948098245922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1240130996 and 1240131014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240131091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 736455 + ... + 738136.

Almost surely, 2^1240131031 is an apocalyptic number.

1240131031 is a deficient number, since it is larger than the sum of its proper divisors (44238601).

1240131031 is an equidigital number, since it uses as much as digits as its factorization.

1240131031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474649 (or 1474620 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1240131031 is about 35215.4941893480. The cubic root of 1240131031 is about 1074.3749114467.

Adding to 1240131031 its reverse (1301310421), we get a palindrome (2541441452).

The spelling of 1240131031 in words is "one billion, two hundred forty million, one hundred thirty-one thousand, thirty-one".