1401311031 has 4 divisors (see below), whose sum is σ = 1868414712. Its totient is φ = 934207352.

The previous prime is 1401311029. The next prime is 1401311039. The reversal of 1401311031 is 1301131041.

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 1401311031 - 2¹ = 1401311029 is a prime.

It is a super-2 number, since 2×1401311031² = 3927345211204565922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1401311031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401311039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233551836 + ... + 233551841.

It is an arithmetic number, because the mean of its divisors is an integer number (467103678).

Almost surely, 2^1401311031 is an apocalyptic number.

1401311031 is a deficient number, since it is larger than the sum of its proper divisors (467103681).

1401311031 is an equidigital number, since it uses as much as digits as its factorization.

1401311031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467103680.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1401311031 is about 37434.0891568100. The cubic root of 1401311031 is about 1119.0380321551.

Adding to 1401311031 its reverse (1301131041), we get a palindrome (2702442072).

The spelling of 1401311031 in words is "one billion, four hundred one million, three hundred eleven thousand, thirty-one".