31028234 has 4 divisors (see below), whose sum is σ = 46542354. Its totient is φ = 15514116.

The previous prime is 31028203. The next prime is 31028243. The reversal of 31028234 is 43282013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43282013 = 457 ⋅94709.

It can be written as a sum of positive squares in only one way, i.e., 18447025 + 12581209 = 4295^2 + 3547^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7757057 + ... + 7757060.

Almost surely, 2^31028234 is an apocalyptic number.

31028234 is a deficient number, since it is larger than the sum of its proper divisors (15514120).

31028234 is a wasteful number, since it uses less digits than its factorization.

31028234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15514119.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 31028234 is about 5570.2992738272. The cubic root of 31028234 is about 314.2334059147.

The spelling of 31028234 in words is "thirty-one million, twenty-eight thousand, two hundred thirty-four".