31203134011 has 8 divisors (see below), whose sum is σ = 35776885760. Its totient is φ = 26658422568.

The previous prime is 31203133993. The next prime is 31203134033. The reversal of 31203134011 is 11043130213.

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 31203134011 - 2¹⁷ = 31203002939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31203134011.

It is not an unprimeable number, because it can be changed into a prime (31203134411) 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, 7257771 + ... + 7262068.

It is an arithmetic number, because the mean of its divisors is an integer number (4472110720).

Almost surely, 2^31203134011 is an apocalyptic number.

31203134011 is a deficient number, since it is larger than the sum of its proper divisors (4573751749).

31203134011 is a wasteful number, since it uses less digits than its factorization.

31203134011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14520153.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31203134011 its reverse (11043130213), we get a palindrome (42246264224).

The spelling of 31203134011 in words is "thirty-one billion, two hundred three million, one hundred thirty-four thousand, eleven".