134621431 has 16 divisors (see below), whose sum is σ = 158241600. Its totient is φ = 112140288.

The previous prime is 134621407. The next prime is 134621447. The reversal of 134621431 is 134126431.

It is a cyclic number.

It is not a de Polignac number, because 134621431 - 2¹³ = 134613239 is a prime.

It is a super-2 number, since 2×134621431² = 36245859368975522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 134621396 and 134621405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134621401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38775 + ... + 42103.

It is an arithmetic number, because the mean of its divisors is an integer number (9890100).

Almost surely, 2^134621431 is an apocalyptic number.

134621431 is a deficient number, since it is larger than the sum of its proper divisors (23620169).

134621431 is a wasteful number, since it uses less digits than its factorization.

134621431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3498.

The product of its digits is 1728, while the sum is 25.

The square root of 134621431 is about 11602.6475857883. The cubic root of 134621431 is about 512.5128210951.

Adding to 134621431 its reverse (134126431), we get a palindrome (268747862).

The spelling of 134621431 in words is "one hundred thirty-four million, six hundred twenty-one thousand, four hundred thirty-one".