31011001011011 has 4 divisors (see below), whose sum is σ = 35441144012592. Its totient is φ = 26580858009432.

The previous prime is 31011001010939. The next prime is 31011001011041. The reversal of 31011001011011 is 11011010011013.

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

It is a cyclic number.

It is not a de Polignac number, because 31011001011011 - 2¹⁴ = 31011000994627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31011001010983 and 31011001011001.

It is not an unprimeable number, because it can be changed into a prime (31011001011041) 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, 2215071500780 + ... + 2215071500793.

It is an arithmetic number, because the mean of its divisors is an integer number (8860286003148).

Almost surely, 2^{31011001011011} is an apocalyptic number.

31011001011011 is a deficient number, since it is larger than the sum of its proper divisors (4430143001581).

31011001011011 is an equidigital number, since it uses as much as digits as its factorization.

31011001011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4430143001580.

The product of its (nonzero) digits is 3, while the sum is 11.

Adding to 31011001011011 its reverse (11011010011013), we get a palindrome (42022011022024).

The spelling of 31011001011011 in words is "thirty-one trillion, eleven billion, one million, eleven thousand, eleven".