1401100031 has 4 divisors (see below), whose sum is σ = 1401185592. Its totient is φ = 1401014472.

The previous prime is 1401100021. The next prime is 1401100037. The reversal of 1401100031 is 1300011041.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1300011041 = 7 ⋅185715863.

It is a cyclic number.

It is not a de Polignac number, because 1401100031 - 2¹⁸ = 1400837887 is a prime.

It is a super-2 number, since 2×1401100031² = 3926162593736401922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1401099985 and 1401100021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401100037) 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, 9680 + ... + 53813.

It is an arithmetic number, because the mean of its divisors is an integer number (350296398).

Almost surely, 2^1401100031 is an apocalyptic number.

1401100031 is a deficient number, since it is larger than the sum of its proper divisors (85561).

1401100031 is an equidigital number, since it uses as much as digits as its factorization.

1401100031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85560.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1401100031 is about 37431.2707638947. The cubic root of 1401100031 is about 1118.9818635931.

Adding to 1401100031 its reverse (1300011041), we get a palindrome (2701111072).

The spelling of 1401100031 in words is "one billion, four hundred one million, one hundred thousand, thirty-one".