1420431331 has 8 divisors (see below), whose sum is σ = 1549842624. Its totient is φ = 1291066920.

The previous prime is 1420431307. The next prime is 1420431349. The reversal of 1420431331 is 1331340241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1420431331 - 2²¹ = 1418334179 is a prime.

It is a super-2 number, since 2×1420431331² = 4035250332172863122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1420431361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90256 + ... + 104818.

It is an arithmetic number, because the mean of its divisors is an integer number (193730328).

Almost surely, 2^1420431331 is an apocalyptic number.

1420431331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1420431331 is a deficient number, since it is larger than the sum of its proper divisors (129411293).

1420431331 is a wasteful number, since it uses less digits than its factorization.

1420431331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23441.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1420431331 is about 37688.6100964204. The cubic root of 1420431331 is about 1124.1046587513.

Adding to 1420431331 its reverse (1331340241), we get a palindrome (2751771572).

The spelling of 1420431331 in words is "one billion, four hundred twenty million, four hundred thirty-one thousand, three hundred thirty-one".