131421366 has 40 divisors (see below), whose sum is σ = 309987480. Its totient is φ = 41500512.

The previous prime is 131421349. The next prime is 131421383. The reversal of 131421366 is 663124131.

It is an interprime number because it is at equal distance from previous prime (131421349) and next prime (131421383).

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18271 + ... + 24426.

It is an arithmetic number, because the mean of its divisors is an integer number (7749687).

Almost surely, 2^131421366 is an apocalyptic number.

131421366 is an abundant number, since it is smaller than the sum of its proper divisors (178566114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131421366 is a wasteful number, since it uses less digits than its factorization.

131421366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42730 (or 42721 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 131421366 is about 11463.9158231383. The cubic root of 131421366 is about 508.4192578094.

Adding to 131421366 its reverse (663124131), we get a palindrome (794545497).

The spelling of 131421366 in words is "one hundred thirty-one million, four hundred twenty-one thousand, three hundred sixty-six".