1401133503 has 16 divisors (see below), whose sum is σ = 2329157376. Its totient is φ = 727861440.

The previous prime is 1401133477. The next prime is 1401133519. The reversal of 1401133503 is 3053311041.

It is not a de Polignac number, because 1401133503 - 2⁵ = 1401133471 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1401133503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401133103) 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, 3032526 + ... + 3032987.

It is an arithmetic number, because the mean of its divisors is an integer number (145572336).

Almost surely, 2^1401133503 is an apocalyptic number.

1401133503 is a deficient number, since it is larger than the sum of its proper divisors (928023873).

1401133503 is a wasteful number, since it uses less digits than its factorization.

1401133503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6065534.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 1401133503 is about 37431.7178740169. The cubic root of 1401133503 is about 1118.9907742732.

Adding to 1401133503 its reverse (3053311041), we get a palindrome (4454444544).

The spelling of 1401133503 in words is "one billion, four hundred one million, one hundred thirty-three thousand, five hundred three".