131421455 has 8 divisors (see below), whose sum is σ = 172042704. Its totient is φ = 95579200.

The previous prime is 131421439. The next prime is 131421457. The reversal of 131421455 is 554124131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131421455 - 2⁴ = 131421439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131421457) 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, 1194686 + ... + 1194795.

It is an arithmetic number, because the mean of its divisors is an integer number (21505338).

Almost surely, 2^131421455 is an apocalyptic number.

131421455 is a deficient number, since it is larger than the sum of its proper divisors (40621249).

131421455 is a wasteful number, since it uses less digits than its factorization.

131421455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389497.

The product of its digits is 2400, while the sum is 26.

The square root of 131421455 is about 11463.9197048828. The cubic root of 131421455 is about 508.4193725784.

Adding to 131421455 its reverse (554124131), we get a palindrome (685545586).

The spelling of 131421455 in words is "one hundred thirty-one million, four hundred twenty-one thousand, four hundred fifty-five".