1312141340 has 24 divisors (see below), whose sum is σ = 2844385152. Its totient is φ = 507925440.

The previous prime is 1312141307. The next prime is 1312141343. The reversal of 1312141340 is 431412131.

It is a super-2 number, since 2×1312141340² = 3443429792273991200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312141343) 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, 1057559 + ... + 1058798.

It is an arithmetic number, because the mean of its divisors is an integer number (118516048).

Almost surely, 2^1312141340 is an apocalyptic number.

1312141340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312141340 is an abundant number, since it is smaller than the sum of its proper divisors (1532243812).

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

1312141340 is a wasteful number, since it uses less digits than its factorization.

1312141340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116397 (or 2116395 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1312141340 is about 36223.4915489935. The cubic root of 1312141340 is about 1094.7800451984.

Adding to 1312141340 its reverse (431412131), we get a palindrome (1743553471).

The spelling of 1312141340 in words is "one billion, three hundred twelve million, one hundred forty-one thousand, three hundred forty".