1381024723 has 4 divisors (see below), whose sum is σ = 1487257408. Its totient is φ = 1274792040.

The previous prime is 1381024717. The next prime is 1381024769. The reversal of 1381024723 is 3274201831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1381024723 - 2⁵ = 1381024691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1381024123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53116323 + ... + 53116348.

It is an arithmetic number, because the mean of its divisors is an integer number (371814352).

Almost surely, 2^1381024723 is an apocalyptic number.

1381024723 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1381024723 is a deficient number, since it is larger than the sum of its proper divisors (106232685).

1381024723 is a wasteful number, since it uses less digits than its factorization.

1381024723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106232684.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 1381024723 is about 37162.1409905296. The cubic root of 1381024723 is about 1113.6117837015.

The spelling of 1381024723 in words is "one billion, three hundred eighty-one million, twenty-four thousand, seven hundred twenty-three".