1401305381 has 12 divisors (see below), whose sum is σ = 1635033600. Its totient is φ = 1197476280.

The previous prime is 1401305377. The next prime is 1401305419. The reversal of 1401305381 is 1835031041.

It is not a de Polignac number, because 1401305381 - 2² = 1401305377 is a prime.

It is a super-2 number, since 2×1401305381² = 3927313541639110322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1401305381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401305281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26981 + ... + 59418.

It is an arithmetic number, because the mean of its divisors is an integer number (136252800).

Almost surely, 2^1401305381 is an apocalyptic number.

It is an amenable number.

1401305381 is a deficient number, since it is larger than the sum of its proper divisors (233728219).

1401305381 is an equidigital number, since it uses as much as digits as its factorization.

1401305381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86744 (or 86737 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1401305381 is about 37434.0136907599. The cubic root of 1401305381 is about 1119.0365281889.

The spelling of 1401305381 in words is "one billion, four hundred one million, three hundred five thousand, three hundred eighty-one".