1430440131 has 4 divisors (see below), whose sum is σ = 1907253512. Its totient is φ = 953626752.

The previous prime is 1430440097. The next prime is 1430440171. The reversal of 1430440131 is 1310440341.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-1430440131 is a prime.

It is a super-2 number, since 2×1430440131² = 4092317936750594322, 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 = 1430440098 and 1430440107.

It is not an unprimeable number, because it can be changed into a prime (1430440171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238406686 + ... + 238406691.

It is an arithmetic number, because the mean of its divisors is an integer number (476813378).

Almost surely, 2^1430440131 is an apocalyptic number.

1430440131 is a deficient number, since it is larger than the sum of its proper divisors (476813381).

1430440131 is an equidigital number, since it uses as much as digits as its factorization.

1430440131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476813380.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1430440131 is about 37821.1598315017. The cubic root of 1430440131 is about 1126.7387449754.

Adding to 1430440131 its reverse (1310440341), we get a palindrome (2740880472).

The spelling of 1430440131 in words is "one billion, four hundred thirty million, four hundred forty thousand, one hundred thirty-one".