1101530431 has 2 divisors, whose sum is σ = 1101530432. Its totient is φ = 1101530430.

The previous prime is 1101530393. The next prime is 1101530473. The reversal of 1101530431 is 1340351011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1101530431 - 2¹⁹ = 1101006143 is a prime.

It is a super-2 number, since 2×1101530431² = 2426738580838091522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1101530399 and 1101530408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101533431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550765215 + 550765216.

It is an arithmetic number, because the mean of its divisors is an integer number (550765216).

Almost surely, 2^1101530431 is an apocalyptic number.

1101530431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101530431 is an equidigital number, since it uses as much as digits as its factorization.

1101530431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1101530431 is about 33189.3119994977. The cubic root of 1101530431 is about 1032.7586310262.

Adding to 1101530431 its reverse (1340351011), we get a palindrome (2441881442).

The spelling of 1101530431 in words is "one billion, one hundred one million, five hundred thirty thousand, four hundred thirty-one".