131101031 has 4 divisors (see below), whose sum is σ = 131689152. Its totient is φ = 130512912.

The previous prime is 131101021. The next prime is 131101037. The reversal of 131101031 is 130101131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130101131 = 1543 ⋅84317.

It is a cyclic number.

It is not a de Polignac number, because 131101031 - 2¹⁰ = 131100007 is a prime.

It is a super-2 number, since 2×131101031² = 34374960658525922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131101037) 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, 293726 + ... + 294171.

It is an arithmetic number, because the mean of its divisors is an integer number (32922288).

Almost surely, 2^131101031 is an apocalyptic number.

131101031 is a deficient number, since it is larger than the sum of its proper divisors (588121).

131101031 is an equidigital number, since it uses as much as digits as its factorization.

131101031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588120.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 131101031 is about 11449.9358513487. The cubic root of 131101031 is about 508.0058369863.

Adding to 131101031 its reverse (130101131), we get a palindrome (261202162).

It can be divided in two parts, 13110 and 1031, that added together give a palindrome (14141).

The spelling of 131101031 in words is "one hundred thirty-one million, one hundred one thousand, thirty-one".