1302131340 has 36 divisors (see below), whose sum is σ = 3949798944. Its totient is φ = 347234976.

The previous prime is 1302131339. The next prime is 1302131447. The reversal of 1302131340 is 431312031.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1302131340² = 3391092053220391200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3616852 + ... + 3617211.

Almost surely, 2^1302131340 is an apocalyptic number.

1302131340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1302131340 is an abundant number, since it is smaller than the sum of its proper divisors (2647667604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1302131340 is a wasteful number, since it uses less digits than its factorization.

1302131340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7234078 (or 7234073 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1302131340 is about 36085.0570181065. The cubic root of 1302131340 is about 1091.9890008150.

Adding to 1302131340 its reverse (431312031), we get a palindrome (1733443371).

The spelling of 1302131340 in words is "one billion, three hundred two million, one hundred thirty-one thousand, three hundred forty".