34742731 has 4 divisors (see below), whose sum is σ = 34898752. Its totient is φ = 34586712.

The previous prime is 34742711. The next prime is 34742749. The reversal of 34742731 is 13724743.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 34742731 - 2⁹ = 34742219 is a prime.

It is a super-2 number, since 2×34742731² = 2414114714676722, 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 = 34742693 and 34742702.

It is not an unprimeable number, because it can be changed into a prime (34742711) 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, 77676 + ... + 78121.

It is an arithmetic number, because the mean of its divisors is an integer number (8724688).

Almost surely, 2^34742731 is an apocalyptic number.

34742731 is a deficient number, since it is larger than the sum of its proper divisors (156021).

34742731 is a wasteful number, since it uses less digits than its factorization.

34742731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156020.

The product of its digits is 14112, while the sum is 31.

The square root of 34742731 is about 5894.2964804971. The cubic root of 34742731 is about 326.3031887758.

The spelling of 34742731 in words is "thirty-four million, seven hundred forty-two thousand, seven hundred thirty-one".