1306423220690 has 64 divisors (see below), whose sum is σ = 2741858657280. Its totient is φ = 438879168000.

The previous prime is 1306423220681. The next prime is 1306423220693. The reversal of 1306423220690 is 960223246031.

It is a super-2 number, since 2×1306423220690² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1306423220693) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2551766 + ... + 3020654.

It is an arithmetic number, because the mean of its divisors is an integer number (42841541520).

Almost surely, 2^{1306423220690} is an apocalyptic number.

1306423220690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1306423220690 is an abundant number, since it is smaller than the sum of its proper divisors (1435435436590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1306423220690 is a wasteful number, since it uses less digits than its factorization.

1306423220690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469707.

The product of its (nonzero) digits is 93312, while the sum is 38.

The spelling of 1306423220690 in words is "one trillion, three hundred six billion, four hundred twenty-three million, two hundred twenty thousand, six hundred ninety".