1373620531 has 2 divisors, whose sum is σ = 1373620532. Its totient is φ = 1373620530.

The previous prime is 1373620517. The next prime is 1373620579. The reversal of 1373620531 is 1350263731.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1373620531 is a prime.

It is a super-2 number, since 2×1373620531² = 3773666726369443922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1373620493 and 1373620502.

It is not a weakly prime, because it can be changed into another prime (1373629531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686810265 + 686810266.

It is an arithmetic number, because the mean of its divisors is an integer number (686810266).

Almost surely, 2^1373620531 is an apocalyptic number.

1373620531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1373620531 is an equidigital number, since it uses as much as digits as its factorization.

1373620531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 1373620531 is about 37062.3870116322. The cubic root of 1373620531 is about 1111.6180527847.

The spelling of 1373620531 in words is "one billion, three hundred seventy-three million, six hundred twenty thousand, five hundred thirty-one".