1121403431 has 2 divisors, whose sum is σ = 1121403432. Its totient is φ = 1121403430.

The previous prime is 1121403403. The next prime is 1121403467. The reversal of 1121403431 is 1343041211.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121403431 is a prime.

It is a super-2 number, since 2×1121403431² = 2515091310117143522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121403401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560701715 + 560701716.

It is an arithmetic number, because the mean of its divisors is an integer number (560701716).

Almost surely, 2^1121403431 is an apocalyptic number.

1121403431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121403431 is an equidigital number, since it uses as much as digits as its factorization.

1121403431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1121403431 is about 33487.3622580221. The cubic root of 1121403431 is about 1038.9324076016.

Adding to 1121403431 its reverse (1343041211), we get a palindrome (2464444642).

The spelling of 1121403431 in words is "one billion, one hundred twenty-one million, four hundred three thousand, four hundred thirty-one".