1401331031 has 4 divisors (see below), whose sum is σ = 1403259312. Its totient is φ = 1399402752.

The previous prime is 1401331003. The next prime is 1401331033. The reversal of 1401331031 is 1301331041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1301331041 = 11839 ⋅109919.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401331031 is a prime.

It is a super-2 number, since 2×1401331031² = 3927457316887045922, 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 (1401331033) 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, 963050 + ... + 964503.

It is an arithmetic number, because the mean of its divisors is an integer number (350814828).

Almost surely, 2^1401331031 is an apocalyptic number.

1401331031 is a deficient number, since it is larger than the sum of its proper divisors (1928281).

1401331031 is an equidigital number, since it uses as much as digits as its factorization.

1401331031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928280.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1401331031 is about 37434.3562920481. The cubic root of 1401331031 is about 1119.0433558969.

Adding to 1401331031 its reverse (1301331041), we get a palindrome (2702662072).

The spelling of 1401331031 in words is "one billion, four hundred one million, three hundred thirty-one thousand, thirty-one".