1111401031 has 4 divisors (see below), whose sum is σ = 1196893432. Its totient is φ = 1025908632.

The previous prime is 1111401023. The next prime is 1111401037. The reversal of 1111401031 is 1301041111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1301041111 = 9601 ⋅135511.

It is a cyclic number.

It is not a de Polignac number, because 1111401031 - 2³ = 1111401023 is a prime.

It is a super-2 number, since 2×1111401031² = 2470424503415725922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 85492387 = 1111401031 / (1 + 1 + 1 + 1 + 4 + 0 + 1 + 0 + 3 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111401037) 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, 42746181 + ... + 42746206.

It is an arithmetic number, because the mean of its divisors is an integer number (299223358).

Almost surely, 2^1111401031 is an apocalyptic number.

1111401031 is a deficient number, since it is larger than the sum of its proper divisors (85492401).

1111401031 is an equidigital number, since it uses as much as digits as its factorization.

1111401031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85492400.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1111401031 is about 33337.6818480230. The cubic root of 1111401031 is about 1035.8342456675.

Adding to 1111401031 its reverse (1301041111), we get a palindrome (2412442142).

The spelling of 1111401031 in words is "one billion, one hundred eleven million, four hundred one thousand, thirty-one".