1020030091 has 8 divisors (see below), whose sum is σ = 1042550784. Its totient is φ = 997736040.

The previous prime is 1020030083. The next prime is 1020030101. The reversal of 1020030091 is 1900300201.

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 1020030091 - 2³ = 1020030083 is a prime.

It is a super-2 number, since 2×1020030091² = 2080922773090936562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020030001) 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, 47545 + ... + 65578.

It is an arithmetic number, because the mean of its divisors is an integer number (130318848).

Almost surely, 2^1020030091 is an apocalyptic number.

1020030091 is a deficient number, since it is larger than the sum of its proper divisors (22520693).

1020030091 is a wasteful number, since it uses less digits than its factorization.

1020030091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113321.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1020030091 is about 31937.9099347468. The cubic root of 1020030091 is about 1006.6326082484.

Adding to 1020030091 its reverse (1900300201), we get a palindrome (2920330292).

The spelling of 1020030091 in words is "one billion, twenty million, thirty thousand, ninety-one".