1230377731 has 8 divisors (see below), whose sum is σ = 1353324528. Its totient is φ = 1118524000.

The previous prime is 1230377717. The next prime is 1230377767. The reversal of 1230377731 is 1377730321.

It is not a de Polignac number, because 1230377731 - 2⁹ = 1230377219 is a prime.

It is a super-2 number, since 2×1230377731² = 3027658721881416722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230377711) 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, 460870 + ... + 463531.

It is an arithmetic number, because the mean of its divisors is an integer number (169165566).

Almost surely, 2^1230377731 is an apocalyptic number.

1230377731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1230377731 is a deficient number, since it is larger than the sum of its proper divisors (122946797).

1230377731 is an frugal number, since it uses more digits than its factorization.

1230377731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924434 (or 924412 counting only the distinct ones).

The product of its (nonzero) digits is 18522, while the sum is 34.

The square root of 1230377731 is about 35076.7405982939. The cubic root of 1230377731 is about 1071.5509377558.

The spelling of 1230377731 in words is "one billion, two hundred thirty million, three hundred seventy-seven thousand, seven hundred thirty-one".