1313442251 has 16 divisors (see below), whose sum is σ = 1446432768. Its totient is φ = 1182772800.

The previous prime is 1313442239. The next prime is 1313442269. The reversal of 1313442251 is 1522443131.

It is a happy number.

It is not a de Polignac number, because 1313442251 - 2⁶ = 1313442187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1313442251.

It is not an unprimeable number, because it can be changed into a prime (1313442211) 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, 551375 + ... + 553751.

It is an arithmetic number, because the mean of its divisors is an integer number (90402048).

Almost surely, 2^1313442251 is an apocalyptic number.

1313442251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1313442251 is a deficient number, since it is larger than the sum of its proper divisors (132990517).

1313442251 is a wasteful number, since it uses less digits than its factorization.

1313442251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842.

The product of its digits is 2880, while the sum is 26.

The square root of 1313442251 is about 36241.4438316136. The cubic root of 1313442251 is about 1095.1417290468.

Adding to 1313442251 its reverse (1522443131), we get a palindrome (2835885382).

The spelling of 1313442251 in words is "one billion, three hundred thirteen million, four hundred forty-two thousand, two hundred fifty-one".