1381251303 has 24 divisors (see below), whose sum is σ = 2113566000. Its totient is φ = 866795904.

The previous prime is 1381251299. The next prime is 1381251367. The reversal of 1381251303 is 3031521831.

1381251303 is a `hidden beast` number, since 1 + 381 + 251 + 30 + 3 = 666.

It is not a de Polignac number, because 1381251303 - 2² = 1381251299 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381251803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1123 + ... + 52571.

It is an arithmetic number, because the mean of its divisors is an integer number (88065250).

Almost surely, 2^1381251303 is an apocalyptic number.

1381251303 is a deficient number, since it is larger than the sum of its proper divisors (732314697).

1381251303 is a wasteful number, since it uses less digits than its factorization.

1381251303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51631 (or 51628 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1381251303 is about 37165.1893981451. The cubic root of 1381251303 is about 1113.6726825292.

The spelling of 1381251303 in words is "one billion, three hundred eighty-one million, two hundred fifty-one thousand, three hundred three".