31434437 has 4 divisors (see below), whose sum is σ = 31488576. Its totient is φ = 31380300.

The previous prime is 31434427. The next prime is 31434439. The reversal of 31434437 is 73443413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73443413 = 5431 ⋅13523.

It is a cyclic number.

It is not a de Polignac number, because 31434437 - 2⁴ = 31434421 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 (31434439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26189 + ... + 27362.

It is an arithmetic number, because the mean of its divisors is an integer number (7872144).

Almost surely, 2^31434437 is an apocalyptic number.

It is an amenable number.

31434437 is a deficient number, since it is larger than the sum of its proper divisors (54139).

31434437 is an equidigital number, since it uses as much as digits as its factorization.

31434437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54138.

The product of its digits is 12096, while the sum is 29.

The square root of 31434437 is about 5606.6422215083. The cubic root of 31434437 is about 315.5987168520.

The spelling of 31434437 in words is "thirty-one million, four hundred thirty-four thousand, four hundred thirty-seven".