1252073731 has 4 divisors (see below), whose sum is σ = 1257447672. Its totient is φ = 1246699792.

The previous prime is 1252073657. The next prime is 1252073737. The reversal of 1252073731 is 1373702521.

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 1252073731 - 2²⁹ = 715202819 is a prime.

It is a super-2 number, since 2×1252073731² = 3135377255720520722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1252073693 and 1252073702.

It is not an unprimeable number, because it can be changed into a prime (1252073737) 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, 2686621 + ... + 2687086.

It is an arithmetic number, because the mean of its divisors is an integer number (314361918).

Almost surely, 2^1252073731 is an apocalyptic number.

1252073731 is a deficient number, since it is larger than the sum of its proper divisors (5373941).

1252073731 is an equidigital number, since it uses as much as digits as its factorization.

1252073731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5373940.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 1252073731 is about 35384.6538911998. The cubic root of 1252073731 is about 1077.8127116364.

The spelling of 1252073731 in words is "one billion, two hundred fifty-two million, seventy-three thousand, seven hundred thirty-one".