1440740131 has 2 divisors, whose sum is σ = 1440740132. Its totient is φ = 1440740130.

The previous prime is 1440740129. The next prime is 1440740137. The reversal of 1440740131 is 1310470441.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1440740131 - 2¹ = 1440740129 is a prime.

It is a super-2 number, since 2×1440740131² = 4151464250147794322, which contains 22 as substring.

Together with 1440740129, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1440740096 and 1440740105.

It is not a weakly prime, because it can be changed into another prime (1440740137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720370065 + 720370066.

It is an arithmetic number, because the mean of its divisors is an integer number (720370066).

Almost surely, 2^1440740131 is an apocalyptic number.

1440740131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440740131 is an equidigital number, since it uses as much as digits as its factorization.

1440740131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 1440740131 is about 37957.0827514444. The cubic root of 1440740131 is about 1129.4366709472.

The spelling of 1440740131 in words is "one billion, four hundred forty million, seven hundred forty thousand, one hundred thirty-one".