1375222531 has 4 divisors (see below), whose sum is σ = 1456117992. Its totient is φ = 1294327072.

The previous prime is 1375222487. The next prime is 1375222547. The reversal of 1375222531 is 1352225731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1375222531 - 2⁹ = 1375222019 is a prime.

It is a super-2 number, since 2×1375222531² = 3782474019540091922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1375222493 and 1375222502.

It is not an unprimeable number, because it can be changed into a prime (1375222561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40447705 + ... + 40447738.

It is an arithmetic number, because the mean of its divisors is an integer number (364029498).

Almost surely, 2^1375222531 is an apocalyptic number.

1375222531 is a deficient number, since it is larger than the sum of its proper divisors (80895461).

1375222531 is an equidigital number, since it uses as much as digits as its factorization.

1375222531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80895460.

The product of its digits is 12600, while the sum is 31.

The square root of 1375222531 is about 37083.9929214749. The cubic root of 1375222531 is about 1112.0500304746.

The spelling of 1375222531 in words is "one billion, three hundred seventy-five million, two hundred twenty-two thousand, five hundred thirty-one".