1313121455 has 8 divisors (see below), whose sum is σ = 1576032432. Its totient is φ = 1050306048.

The previous prime is 1313121449. The next prime is 1313121461. The reversal of 1313121455 is 5541213131.

It is an interprime number because it is at equal distance from previous prime (1313121449) and next prime (1313121461).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1313121455 - 2³⁰ = 239379631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10964 + ... + 52406.

It is an arithmetic number, because the mean of its divisors is an integer number (197004054).

Almost surely, 2^1313121455 is an apocalyptic number.

1313121455 is a deficient number, since it is larger than the sum of its proper divisors (262910977).

1313121455 is an equidigital number, since it uses as much as digits as its factorization.

1313121455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47785.

The product of its digits is 1800, while the sum is 26.

The square root of 1313121455 is about 36237.0177442902. The cubic root of 1313121455 is about 1095.0525624081.

Adding to 1313121455 its reverse (5541213131), we get a palindrome (6854334586).

The spelling of 1313121455 in words is "one billion, three hundred thirteen million, one hundred twenty-one thousand, four hundred fifty-five".