78035431 has 2 divisors, whose sum is σ = 78035432. Its totient is φ = 78035430.

The previous prime is 78035407. The next prime is 78035483. The reversal of 78035431 is 13453087.

It is a weak prime.

It is an emirp because it is prime and its reverse (13453087) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78035431 - 2²¹ = 75938279 is a prime.

It is a super-2 number, since 2×78035431² = 12179056982711522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78035393 and 78035402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78035131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39017715 + 39017716.

It is an arithmetic number, because the mean of its divisors is an integer number (39017716).

Almost surely, 2^78035431 is an apocalyptic number.

78035431 is a deficient number, since it is larger than the sum of its proper divisors (1).

78035431 is an equidigital number, since it uses as much as digits as its factorization.

78035431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 78035431 is about 8833.7665239693. The cubic root of 78035431 is about 427.3305526372.

The spelling of 78035431 in words is "seventy-eight million, thirty-five thousand, four hundred thirty-one".