61069431 has 8 divisors (see below), whose sum is σ = 81491184. Its totient is φ = 40680320.

The previous prime is 61069429. The next prime is 61069433. The reversal of 61069431 is 13496016.

It is an interprime number because it is at equal distance from previous prime (61069429) and next prime (61069433).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61069431 - 2¹ = 61069429 is a prime.

It is a super-2 number, since 2×61069431² = 7458950805327522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61069433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3396 + ... + 11561.

It is an arithmetic number, because the mean of its divisors is an integer number (10186398).

Almost surely, 2^61069431 is an apocalyptic number.

61069431 is a deficient number, since it is larger than the sum of its proper divisors (20421753).

61069431 is a wasteful number, since it uses less digits than its factorization.

61069431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16321.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 61069431 is about 7814.6932761305. The cubic root of 61069431 is about 393.7990141051.

The spelling of 61069431 in words is "sixty-one million, sixty-nine thousand, four hundred thirty-one".