61034309 has 4 divisors (see below), whose sum is σ = 69753504. Its totient is φ = 52315116.

The previous prime is 61034297. The next prime is 61034317. The reversal of 61034309 is 90343016.

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.

It is not a de Polignac number, because 61034309 - 2⁴ = 61034293 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61034399) 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, 4359587 + ... + 4359600.

It is an arithmetic number, because the mean of its divisors is an integer number (17438376).

Almost surely, 2^61034309 is an apocalyptic number.

It is an amenable number.

61034309 is a deficient number, since it is larger than the sum of its proper divisors (8719195).

61034309 is an equidigital number, since it uses as much as digits as its factorization.

61034309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8719194.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 61034309 is about 7812.4457758118. The cubic root of 61034309 is about 393.7235062715.

The spelling of 61034309 in words is "sixty-one million, thirty-four thousand, three hundred nine".