131232231401 has 4 divisors (see below), whose sum is σ = 131484117204. Its totient is φ = 130980345600.

The previous prime is 131232231367. The next prime is 131232231421. The reversal of 131232231401 is 104132232131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104132232131 = 43 ⋅2421679817.

It can be written as a sum of positive squares in 2 ways, for example, as 63242190400 + 67990041001 = 251480^2 + 260749^2 .

It is a cyclic number.

It is not a de Polignac number, because 131232231401 - 2⁶ = 131232231337 is a prime.

It is a super-2 number, since 2×131232231401² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131232231421) 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, 125942120 + ... + 125943161.

It is an arithmetic number, because the mean of its divisors is an integer number (32871029301).

Almost surely, 2^131232231401 is an apocalyptic number.

It is an amenable number.

131232231401 is a deficient number, since it is larger than the sum of its proper divisors (251885803).

131232231401 is an equidigital number, since it uses as much as digits as its factorization.

131232231401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251885802.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 131232231401 its reverse (104132232131), we get a palindrome (235364463532).

The spelling of 131232231401 in words is "one hundred thirty-one billion, two hundred thirty-two million, two hundred thirty-one thousand, four hundred one".