1302421131 has 18 divisors (see below), whose sum is σ = 2067849420. Its totient is φ = 789345480.

The previous prime is 1302421121. The next prime is 1302421181. The reversal of 1302421131 is 1311242031.

It is not a de Polignac number, because 1302421131 - 2²⁵ = 1268866699 is a prime.

It is a super-2 number, since 2×1302421131² = 3392601604950638322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1302421121) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 596901 + ... + 599078.

Almost surely, 2^1302421131 is an apocalyptic number.

1302421131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1302421131 is a deficient number, since it is larger than the sum of its proper divisors (765428289).

1302421131 is a wasteful number, since it uses less digits than its factorization.

1302421131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196007 (or 1195993 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1302421131 is about 36089.0721825873. The cubic root of 1302421131 is about 1092.0700026573.

Adding to 1302421131 its reverse (1311242031), we get a palindrome (2613663162).

Subtracting 1302421131 from its reverse (1311242031), we obtain a square (8820900 = 2970²).

The spelling of 1302421131 in words is "one billion, three hundred two million, four hundred twenty-one thousand, one hundred thirty-one".