1201304091 has 32 divisors (see below), whose sum is σ = 1797687360. Its totient is φ = 708470784.

The previous prime is 1201304081. The next prime is 1201304101. The reversal of 1201304091 is 1904031021.

It is an interprime number because it is at equal distance from previous prime (1201304081) and next prime (1201304101).

It is not a de Polignac number, because 1201304091 - 2¹¹ = 1201302043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201304011) 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, 151071 + ... + 158823.

It is an arithmetic number, because the mean of its divisors is an integer number (56177730).

Almost surely, 2^1201304091 is an apocalyptic number.

1201304091 is a deficient number, since it is larger than the sum of its proper divisors (596383269).

1201304091 is a wasteful number, since it uses less digits than its factorization.

1201304091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7935.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1201304091 is about 34659.8339724817. The cubic root of 1201304091 is about 1063.0433752313.

The spelling of 1201304091 in words is "one billion, two hundred one million, three hundred four thousand, ninety-one".