1031132091 has 32 divisors (see below), whose sum is σ = 1554577920. Its totient is φ = 602201600.

The previous prime is 1031132051. The next prime is 1031132099. The reversal of 1031132091 is 1902311301.

It is not a de Polignac number, because 1031132091 - 2⁷ = 1031131963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1031132099) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 842506 + ... + 843728.

It is an arithmetic number, because the mean of its divisors is an integer number (48580560).

Almost surely, 2^1031132091 is an apocalyptic number.

1031132091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1031132091 is a deficient number, since it is larger than the sum of its proper divisors (523445829).

1031132091 is a wasteful number, since it uses less digits than its factorization.

1031132091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 1031132091 is about 32111.2455535440. The cubic root of 1031132091 is about 1010.2714987530.

Adding to 1031132091 its reverse (1902311301), we get a palindrome (2933443392).

The spelling of 1031132091 in words is "one billion, thirty-one million, one hundred thirty-two thousand, ninety-one".