1313620250 has 128 divisors (see below), whose sum is σ = 2688940800. Its totient is φ = 479404800.

The previous prime is 1313620247. The next prime is 1313620303. The reversal of 1313620250 is 520263131.

It is a super-2 number, since 2×1313620250² = 3451196322420125000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15826709 + ... + 15826791.

It is an arithmetic number, because the mean of its divisors is an integer number (21007350).

Almost surely, 2^1313620250 is an apocalyptic number.

1313620250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1313620250 is an abundant number, since it is smaller than the sum of its proper divisors (1375320550).

1313620250 is a wasteful number, since it uses less digits than its factorization.

1313620250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1313620250 is about 36243.8994866722. The cubic root of 1313620250 is about 1095.1911983775.

Adding to 1313620250 its reverse (520263131), we get a palindrome (1833883381).

The spelling of 1313620250 in words is "one billion, three hundred thirteen million, six hundred twenty thousand, two hundred fifty".