131401223433 has 32 divisors (see below), whose sum is σ = 209685012480. Its totient is φ = 81089102160.

The previous prime is 131401223423. The next prime is 131401223467. The reversal of 131401223433 is 334322104131.

It is a happy number.

131401223433 is a `hidden beast` number, since 1 + 3 + 1 + 4 + 0 + 1 + 223 + 433 = 666.

It is not a de Polignac number, because 131401223433 - 2²² = 131397029129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 131401223397 and 131401223406.

It is not an unprimeable number, because it can be changed into a prime (131401223423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3393591 + ... + 3432092.

It is an arithmetic number, because the mean of its divisors is an integer number (6552656640).

Almost surely, 2^131401223433 is an apocalyptic number.

It is an amenable number.

131401223433 is a deficient number, since it is larger than the sum of its proper divisors (78283789047).

131401223433 is a wasteful number, since it uses less digits than its factorization.

131401223433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6825746 (or 6825740 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 131401223433 its reverse (334322104131), we get a palindrome (465723327564).

The spelling of 131401223433 in words is "one hundred thirty-one billion, four hundred one million, two hundred twenty-three thousand, four hundred thirty-three".