1310855640 has 32 divisors (see below), whose sum is σ = 3932567280. Its totient is φ = 349561472.

The previous prime is 1310855639. The next prime is 1310855641. The reversal of 1310855640 is 465580131.

It is an interprime number because it is at equal distance from previous prime (1310855639) and next prime (1310855641).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310855641) 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, 5461779 + ... + 5462018.

Almost surely, 2^1310855640 is an apocalyptic number.

1310855640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1310855640 is an abundant number, since it is smaller than the sum of its proper divisors (2621711640).

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

1310855640 is a wasteful number, since it uses less digits than its factorization.

1310855640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10923811 (or 10923807 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 1310855640 is about 36205.7404288326. The cubic root of 1310855640 is about 1094.4223554071.

The spelling of 1310855640 in words is "one billion, three hundred ten million, eight hundred fifty-five thousand, six hundred forty".