78113031 has 8 divisors (see below), whose sum is σ = 106965744. Its totient is φ = 50667840.

The previous prime is 78113003. The next prime is 78113041. The reversal of 78113031 is 13031187.

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

It is not a de Polignac number, because 78113031 - 2⁵ = 78112999 is a prime.

It is a super-2 number, since 2×78113031² = 12203291224013922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78112992 and 78113010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78113041) 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, 351750 + ... + 351971.

It is an arithmetic number, because the mean of its divisors is an integer number (13370718).

Almost surely, 2^78113031 is an apocalyptic number.

78113031 is a deficient number, since it is larger than the sum of its proper divisors (28852713).

78113031 is a wasteful number, since it uses less digits than its factorization.

78113031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703761.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 78113031 is about 8838.1576700125. The cubic root of 78113031 is about 427.4721544053.

The spelling of 78113031 in words is "seventy-eight million, one hundred thirteen thousand, thirty-one".