31011402091 has 8 divisors (see below), whose sum is σ = 32915892240. Its totient is φ = 29115833088.

The previous prime is 31011402077. The next prime is 31011402109. The reversal of 31011402091 is 19020411013.

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

It is not a de Polignac number, because 31011402091 - 2³¹ = 28863918443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31011402001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2223121 + ... + 2237026.

It is an arithmetic number, because the mean of its divisors is an integer number (4114486530).

Almost surely, 2^31011402091 is an apocalyptic number.

31011402091 is a deficient number, since it is larger than the sum of its proper divisors (1904490149).

31011402091 is a wasteful number, since it uses less digits than its factorization.

31011402091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4460573.

The product of its (nonzero) digits is 216, while the sum is 22.

The spelling of 31011402091 in words is "thirty-one billion, eleven million, four hundred two thousand, ninety-one".