1023012091 has 8 divisors (see below), whose sum is σ = 1073196000. Its totient is φ = 973822080.

The previous prime is 1023012083. The next prime is 1023012103. The reversal of 1023012091 is 1902103201.

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 1023012091 - 2³ = 1023012083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1023012691) 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, 246366 + ... + 250483.

It is an arithmetic number, because the mean of its divisors is an integer number (134149500).

Almost surely, 2^1023012091 is an apocalyptic number.

1023012091 is a deficient number, since it is larger than the sum of its proper divisors (50183909).

1023012091 is an equidigital number, since it uses as much as digits as its factorization.

1023012091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496949.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1023012091 is about 31984.5601970701. The cubic root of 1023012091 is about 1007.6125982930.

Adding to 1023012091 its reverse (1902103201), we get a palindrome (2925115292).

The spelling of 1023012091 in words is "one billion, twenty-three million, twelve thousand, ninety-one".