1293251061 has 12 divisors (see below), whose sum is σ = 1802567648. Its totient is φ = 824680824.

The previous prime is 1293251023. The next prime is 1293251147. The reversal of 1293251061 is 1601523921.

It is not a de Polignac number, because 1293251061 - 2²¹ = 1291153909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1293251021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 405865 + ... + 409038.

Almost surely, 2^1293251061 is an apocalyptic number.

It is an amenable number.

1293251061 is a deficient number, since it is larger than the sum of its proper divisors (509316587).

1293251061 is an equidigital number, since it uses as much as digits as its factorization.

1293251061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814952 (or 814929 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 1293251061 is about 35961.8000244704. The cubic root of 1293251061 is about 1089.5009529887.

Adding to 1293251061 its reverse (1601523921), we get a palindrome (2894774982).

The spelling of 1293251061 in words is "one billion, two hundred ninety-three million, two hundred fifty-one thousand, sixty-one".