1228461723 has 6 divisors (see below), whose sum is σ = 1774444724. Its totient is φ = 818974476.

The previous prime is 1228461697. The next prime is 1228461727. The reversal of 1228461723 is 3271648221.

It is a happy number.

1228461723 is a `hidden beast` number, since 12 + 2 + 8 + 4 + 617 + 23 = 666.

It is not a de Polignac number, because 1228461723 - 2⁸ = 1228461467 is a prime.

It is a super-2 number, since 2×1228461723² = 3018236409752257458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1228461727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68247865 + ... + 68247882.

Almost surely, 2^1228461723 is an apocalyptic number.

1228461723 is a deficient number, since it is larger than the sum of its proper divisors (545983001).

1228461723 is a wasteful number, since it uses less digits than its factorization.

1228461723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136495753 (or 136495750 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 1228461723 is about 35049.4182975980. The cubic root of 1228461723 is about 1070.9944238843.

The spelling of 1228461723 in words is "one billion, two hundred twenty-eight million, four hundred sixty-one thousand, seven hundred twenty-three".