131405254 has 16 divisors (see below), whose sum is σ = 207820080. Its totient is φ = 62143200.

The previous prime is 131405251. The next prime is 131405297. The reversal of 131405254 is 452504131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131405251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24172 + ... + 29104.

It is an arithmetic number, because the mean of its divisors is an integer number (12988755).

Almost surely, 2^131405254 is an apocalyptic number.

131405254 is a deficient number, since it is larger than the sum of its proper divisors (76414826).

131405254 is a wasteful number, since it uses less digits than its factorization.

131405254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5655.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 131405254 is about 11463.2130748756. The cubic root of 131405254 is about 508.3984798945.

Adding to 131405254 its reverse (452504131), we get a palindrome (583909385).

The spelling of 131405254 in words is "one hundred thirty-one million, four hundred five thousand, two hundred fifty-four".