1090200731 has 2 divisors, whose sum is σ = 1090200732. Its totient is φ = 1090200730.

The previous prime is 1090200721. The next prime is 1090200737. The reversal of 1090200731 is 1370020901.

It is a strong prime.

It is an emirp because it is prime and its reverse (1370020901) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1090200731 is a prime.

It is a super-2 number, since 2×1090200731² = 2377075267745868722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1090200697 and 1090200706.

It is not a weakly prime, because it can be changed into another prime (1090200737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545100365 + 545100366.

It is an arithmetic number, because the mean of its divisors is an integer number (545100366).

Almost surely, 2^1090200731 is an apocalyptic number.

1090200731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1090200731 is an equidigital number, since it uses as much as digits as its factorization.

1090200731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 1090200731 is about 33018.1878818326. The cubic root of 1090200731 is about 1029.2056372494.

The spelling of 1090200731 in words is "one billion, ninety million, two hundred thousand, seven hundred thirty-one".