1402447431 has 64 divisors (see below), whose sum is σ = 2377912320. Its totient is φ = 714147840.

The previous prime is 1402447427. The next prime is 1402447433. The reversal of 1402447431 is 1347442041.

It is not a de Polignac number, because 1402447431 - 2² = 1402447427 is a prime.

It is a super-2 number, since 2×1402447431² = 3933717593436999522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402447433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3700200 + ... + 3700578.

It is an arithmetic number, because the mean of its divisors is an integer number (37154880).

Almost surely, 2^1402447431 is an apocalyptic number.

1402447431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1402447431 is a deficient number, since it is larger than the sum of its proper divisors (975464889).

1402447431 is a wasteful number, since it uses less digits than its factorization.

1402447431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 1402447431 is about 37449.2647591378. The cubic root of 1402447431 is about 1119.3404468676.

Adding to 1402447431 its reverse (1347442041), we get a palindrome (2749889472).

The spelling of 1402447431 in words is "one billion, four hundred two million, four hundred forty-seven thousand, four hundred thirty-one".