1302431421 has 8 divisors (see below), whose sum is σ = 1838726784. Its totient is φ = 817211840.

The previous prime is 1302431411. The next prime is 1302431423. The reversal of 1302431421 is 1241342031.

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 1302431421 - 2¹⁸ = 1302169277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302431423) 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, 12768885 + ... + 12768986.

It is an arithmetic number, because the mean of its divisors is an integer number (229840848).

Almost surely, 2^1302431421 is an apocalyptic number.

It is an amenable number.

1302431421 is a deficient number, since it is larger than the sum of its proper divisors (536295363).

1302431421 is a wasteful number, since it uses less digits than its factorization.

1302431421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25537891.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1302431421 is about 36089.2147462369. The cubic root of 1302431421 is about 1092.0728786780.

Adding to 1302431421 its reverse (1241342031), we get a palindrome (2543773452).

The spelling of 1302431421 in words is "one billion, three hundred two million, four hundred thirty-one thousand, four hundred twenty-one".