1400431231 has 8 divisors (see below), whose sum is σ = 1446144128. Its totient is φ = 1354752000.

The previous prime is 1400431211. The next prime is 1400431313. The reversal of 1400431231 is 1321340041.

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 1400431231 - 2⁹ = 1400430719 is a prime.

It is a super-2 number, since 2×1400431231² = 3922415265520350722, 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 = 1400431199 and 1400431208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400431211) 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 7 ways as a sum of consecutive naturals, for example, 97471 + ... + 110911.

It is an arithmetic number, because the mean of its divisors is an integer number (180768016).

Almost surely, 2^1400431231 is an apocalyptic number.

1400431231 is a deficient number, since it is larger than the sum of its proper divisors (45712897).

1400431231 is a wasteful number, since it uses less digits than its factorization.

1400431231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16833.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1400431231 is about 37422.3359906888. The cubic root of 1400431231 is about 1118.8037906120.

Adding to 1400431231 its reverse (1321340041), we get a palindrome (2721771272).

The spelling of 1400431231 in words is "one billion, four hundred million, four hundred thirty-one thousand, two hundred thirty-one".