401513263 has 4 divisors (see below), whose sum is σ = 422645560. Its totient is φ = 380380968.

The previous prime is 401513251. The next prime is 401513267. The reversal of 401513263 is 362315104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 401513263 - 2²¹ = 399416111 is a prime.

It is a super-2 number, since 2×401513263² = 322425800729814338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401513267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10566120 + ... + 10566157.

It is an arithmetic number, because the mean of its divisors is an integer number (105661390).

Almost surely, 2^401513263 is an apocalyptic number.

401513263 is a deficient number, since it is larger than the sum of its proper divisors (21132297).

401513263 is a wasteful number, since it uses less digits than its factorization.

401513263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21132296.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 401513263 is about 20037.7958618207. The cubic root of 401513263 is about 737.7342819021.

Adding to 401513263 its reverse (362315104), we get a palindrome (763828367).

The spelling of 401513263 in words is "four hundred one million, five hundred thirteen thousand, two hundred sixty-three".