131233402357 has 2 divisors, whose sum is σ = 131233402358. Its totient is φ = 131233402356.

The previous prime is 131233402337. The next prime is 131233402429. The reversal of 131233402357 is 753204332131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129552484356 + 1680918001 = 359934^2 + 40999^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131233402357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131233402337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65616701178 + 65616701179.

It is an arithmetic number, because the mean of its divisors is an integer number (65616701179).

Almost surely, 2^131233402357 is an apocalyptic number.

It is an amenable number.

131233402357 is a deficient number, since it is larger than the sum of its proper divisors (1).

131233402357 is an equidigital number, since it uses as much as digits as its factorization.

131233402357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 34.

Adding to 131233402357 its reverse (753204332131), we get a palindrome (884437734488).

The spelling of 131233402357 in words is "one hundred thirty-one billion, two hundred thirty-three million, four hundred two thousand, three hundred fifty-seven".