1430661431 has 4 divisors (see below), whose sum is σ = 1450811664. Its totient is φ = 1410511200.

The previous prime is 1430661413. The next prime is 1430661509. The reversal of 1430661431 is 1341660341.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1430661431 is a prime.

It is a super-2 number, since 2×1430661431² = 4093584260301935522, 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 = 1430661394 and 1430661403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1430661131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10075010 + ... + 10075151.

It is an arithmetic number, because the mean of its divisors is an integer number (362702916).

Almost surely, 2^1430661431 is an apocalyptic number.

1430661431 is a deficient number, since it is larger than the sum of its proper divisors (20150233).

1430661431 is an equidigital number, since it uses as much as digits as its factorization.

1430661431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20150232.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1430661431 is about 37824.0853293242. The cubic root of 1430661431 is about 1126.7968470055.

The spelling of 1430661431 in words is "one billion, four hundred thirty million, six hundred sixty-one thousand, four hundred thirty-one".