1121400031 has 2 divisors, whose sum is σ = 1121400032. Its totient is φ = 1121400030.

The previous prime is 1121400017. The next prime is 1121400041. The reversal of 1121400031 is 1300041211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121400031 - 2⁵ = 1121399999 is a prime.

It is a super-2 number, since 2×1121400031² = 2515076059053601922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1121399984 and 1121400020.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121400001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560700015 + 560700016.

It is an arithmetic number, because the mean of its divisors is an integer number (560700016).

Almost surely, 2^1121400031 is an apocalyptic number.

1121400031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121400031 is an equidigital number, since it uses as much as digits as its factorization.

1121400031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1121400031 is about 33487.3114925639. The cubic root of 1121400031 is about 1038.9313576156.

Adding to 1121400031 its reverse (1300041211), we get a palindrome (2421441242).

The spelling of 1121400031 in words is "one billion, one hundred twenty-one million, four hundred thousand, thirty-one".