1375864031 has 2 divisors, whose sum is σ = 1375864032. Its totient is φ = 1375864030.

The previous prime is 1375864013. The next prime is 1375864037. The reversal of 1375864031 is 1304685731.

Together with previous prime (1375864013) 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 1375864031 - 2²⁶ = 1308755167 is a prime.

It is a super-2 number, since 2×1375864031² = 3786003663599137922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1375864037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687932015 + 687932016.

It is an arithmetic number, because the mean of its divisors is an integer number (687932016).

Almost surely, 2^1375864031 is an apocalyptic number.

1375864031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375864031 is an equidigital number, since it uses as much as digits as its factorization.

1375864031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 1375864031 is about 37092.6411974127. The cubic root of 1375864031 is about 1112.2229162401. Note that the first 3 decimals are identical.

The spelling of 1375864031 in words is "one billion, three hundred seventy-five million, eight hundred sixty-four thousand, thirty-one".