1078243631 has 2 divisors, whose sum is σ = 1078243632. Its totient is φ = 1078243630.

The previous prime is 1078243613. The next prime is 1078243637. The reversal of 1078243631 is 1363428701.

Together with previous prime (1078243613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1078243631 - 2²⁶ = 1011134767 is a prime.

It is a super-2 number, since 2×1078243631² = 2325218655584128322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1078243591 and 1078243600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1078243637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539121815 + 539121816.

It is an arithmetic number, because the mean of its divisors is an integer number (539121816).

Almost surely, 2^1078243631 is an apocalyptic number.

1078243631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078243631 is an equidigital number, since it uses as much as digits as its factorization.

1078243631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 1078243631 is about 32836.6202737127. The cubic root of 1078243631 is about 1025.4290905433.

The spelling of 1078243631 in words is "one billion, seventy-eight million, two hundred forty-three thousand, six hundred thirty-one".