131021203011 has 16 divisors (see below), whose sum is σ = 174913918464. Its totient is φ = 87238049184.

The previous prime is 131021203009. The next prime is 131021203091. The reversal of 131021203011 is 110302120131.

It is a happy number.

It is not a de Polignac number, because 131021203011 - 2¹ = 131021203009 is a prime.

It is a super-2 number, since 2×131021203011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131021203091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9280620 + ... + 9294726.

It is an arithmetic number, because the mean of its divisors is an integer number (10932119904).

Almost surely, 2^131021203011 is an apocalyptic number.

131021203011 is a deficient number, since it is larger than the sum of its proper divisors (43892715453).

131021203011 is a wasteful number, since it uses less digits than its factorization.

131021203011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17770.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 131021203011 its reverse (110302120131), we get a palindrome (241323323142).

The spelling of 131021203011 in words is "one hundred thirty-one billion, twenty-one million, two hundred three thousand, eleven".