1421312331 has 8 divisors (see below), whose sum is σ = 1901828304. Its totient is φ = 944168960.

The previous prime is 1421312329. The next prime is 1421312369. The reversal of 1421312331 is 1332131241.

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 1421312331 - 2¹ = 1421312329 is a prime.

It is a super-2 number, since 2×1421312331² = 4040257484505307122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1421312298 and 1421312307.

It is not an unprimeable number, because it can be changed into a prime (1421312371) 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, 842166 + ... + 843851.

It is an arithmetic number, because the mean of its divisors is an integer number (237728538).

Almost surely, 2^1421312331 is an apocalyptic number.

1421312331 is a deficient number, since it is larger than the sum of its proper divisors (480515973).

1421312331 is a wasteful number, since it uses less digits than its factorization.

1421312331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686301.

The product of its digits is 432, while the sum is 21.

The square root of 1421312331 is about 37700.2961659454. The cubic root of 1421312331 is about 1124.3370134139.

Adding to 1421312331 its reverse (1332131241), we get a palindrome (2753443572).

The spelling of 1421312331 in words is "one billion, four hundred twenty-one million, three hundred twelve thousand, three hundred thirty-one".