1300731001261 has 8 divisors (see below), whose sum is σ = 1301704072704. Its totient is φ = 1299758053440.

The previous prime is 1300731001249. The next prime is 1300731001307. The reversal of 1300731001261 is 1621001370031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1300731001261 is a prime.

It is a super-2 number, since 2×1300731001261² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1300731001061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36864750 + ... + 36900016.

It is an arithmetic number, because the mean of its divisors is an integer number (162713009088).

Almost surely, 2^{1300731001261} is an apocalyptic number.

It is an amenable number.

1300731001261 is a deficient number, since it is larger than the sum of its proper divisors (973071443).

1300731001261 is a wasteful number, since it uses less digits than its factorization.

1300731001261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61811.

The product of its (nonzero) digits is 756, while the sum is 25.

Adding to 1300731001261 its reverse (1621001370031), we get a palindrome (2921732371292).

The spelling of 1300731001261 in words is "one trillion, three hundred billion, seven hundred thirty-one million, one thousand, two hundred sixty-one".