1400443431 has 16 divisors (see below), whose sum is σ = 1968864000. Its totient is φ = 882992448.

The previous prime is 1400443427. The next prime is 1400443441. The reversal of 1400443431 is 1343440041.

It is not a de Polignac number, because 1400443431 - 2² = 1400443427 is a prime.

It is a super-2 number, since 2×1400443431² = 3922483606862103522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400443441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13635 + ... + 54651.

It is an arithmetic number, because the mean of its divisors is an integer number (123054000).

Almost surely, 2^1400443431 is an apocalyptic number.

1400443431 is a deficient number, since it is larger than the sum of its proper divisors (568420569).

1400443431 is a wasteful number, since it uses less digits than its factorization.

1400443431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41638.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1400443431 is about 37422.4989945888. The cubic root of 1400443431 is about 1118.8070394604.

Adding to 1400443431 its reverse (1343440041), we get a palindrome (2743883472).

The spelling of 1400443431 in words is "one billion, four hundred million, four hundred forty-three thousand, four hundred thirty-one".