31301132011 has 4 divisors (see below), whose sum is σ = 31474066624. Its totient is φ = 31128197400.

The previous prime is 31301131997. The next prime is 31301132021. The reversal of 31301132011 is 11023110313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31301132011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31301132021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86467035 + ... + 86467396.

It is an arithmetic number, because the mean of its divisors is an integer number (7868516656).

Almost surely, 2^31301132011 is an apocalyptic number.

31301132011 is a deficient number, since it is larger than the sum of its proper divisors (172934613).

31301132011 is a wasteful number, since it uses less digits than its factorization.

31301132011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172934612.

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

Adding to 31301132011 its reverse (11023110313), we get a palindrome (42324242324).

The spelling of 31301132011 in words is "thirty-one billion, three hundred one million, one hundred thirty-two thousand, eleven".