1090009031 has 8 divisors (see below), whose sum is σ = 1139978880. Its totient is φ = 1040254072.

The previous prime is 1090009003. The next prime is 1090009093. The reversal of 1090009031 is 1309000901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1090009031 - 2¹⁸ = 1089746887 is a prime.

It is a super-2 number, since 2×1090009031² = 2376239375323117922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1090008988 and 1090009006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090009001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43301 + ... + 63678.

It is an arithmetic number, because the mean of its divisors is an integer number (142497360).

Almost surely, 2^1090009031 is an apocalyptic number.

1090009031 is a deficient number, since it is larger than the sum of its proper divisors (49969849).

1090009031 is a wasteful number, since it uses less digits than its factorization.

1090009031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107445.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 1090009031 is about 33015.2848087064. The cubic root of 1090009031 is about 1029.1453088223.

Adding to 1090009031 its reverse (1309000901), we get a palindrome (2399009932).

The spelling of 1090009031 in words is "one billion, ninety million, nine thousand, thirty-one".