1240413431 has 8 divisors (see below), whose sum is σ = 1265765184. Its totient is φ = 1215133920.

The previous prime is 1240413373. The next prime is 1240413439. The reversal of 1240413431 is 1343140421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1240413431 - 2¹⁴ = 1240397047 is a prime.

It is a super-2 number, since 2×1240413431² = 3077250959610383522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1240413397 and 1240413406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240413439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17330 + ... + 52736.

It is an arithmetic number, because the mean of its divisors is an integer number (158220648).

Almost surely, 2^1240413431 is an apocalyptic number.

1240413431 is a deficient number, since it is larger than the sum of its proper divisors (25351753).

1240413431 is an equidigital number, since it uses as much as digits as its factorization.

1240413431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36121.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1240413431 is about 35219.5035598175. The cubic root of 1240413431 is about 1074.4564567136.

Adding to 1240413431 its reverse (1343140421), we get a palindrome (2583553852).

The spelling of 1240413431 in words is "one billion, two hundred forty million, four hundred thirteen thousand, four hundred thirty-one".