1201312013 has 16 divisors (see below), whose sum is σ = 1347216192. Its totient is φ = 1061712000.

The previous prime is 1201312009. The next prime is 1201312043. The reversal of 1201312013 is 3102131021.

It is a cyclic number.

It is not a de Polignac number, because 1201312013 - 2² = 1201312009 is a prime.

It is a super-2 number, since 2×1201312013² = 2886301105156224338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201312003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127598 + ... + 136688.

It is an arithmetic number, because the mean of its divisors is an integer number (84201012).

Almost surely, 2^1201312013 is an apocalyptic number.

It is an amenable number.

1201312013 is a deficient number, since it is larger than the sum of its proper divisors (145904179).

1201312013 is a wasteful number, since it uses less digits than its factorization.

1201312013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9436.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1201312013 is about 34659.9482544334. The cubic root of 1201312013 is about 1063.0457119727.

Adding to 1201312013 its reverse (3102131021), we get a palindrome (4303443034).

The spelling of 1201312013 in words is "one billion, two hundred one million, three hundred twelve thousand, thirteen".